Properties

Label 20.4.506...000.1
Degree $20$
Signature $(4, 8)$
Discriminant $5.062\times 10^{43}$
Root discriminant \(153.18\)
Ramified primes $2,3,5,13$
Class number $4$ (GRH)
Class group [2, 2] (GRH)
Galois group $C_2^8.(F_5\times S_4)$ (as 20T811)

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Normalized defining polynomial

Copy content comment:Define the number field
 
Copy content sage:x = polygen(QQ); K.<a> = NumberField(x^20 - 60*x^18 - 160*x^17 + 870*x^16 + 4320*x^15 - 3520*x^14 - 54960*x^13 - 68265*x^12 + 307840*x^11 + 947856*x^10 - 307920*x^9 - 4643510*x^8 - 3997440*x^7 + 8299980*x^6 + 8363824*x^5 - 19541415*x^4 - 16312320*x^3 + 14352120*x^2 - 23055840*x - 39496248)
 
Copy content gp:K = bnfinit(y^20 - 60*y^18 - 160*y^17 + 870*y^16 + 4320*y^15 - 3520*y^14 - 54960*y^13 - 68265*y^12 + 307840*y^11 + 947856*y^10 - 307920*y^9 - 4643510*y^8 - 3997440*y^7 + 8299980*y^6 + 8363824*y^5 - 19541415*y^4 - 16312320*y^3 + 14352120*y^2 - 23055840*y - 39496248, 1)
 
Copy content magma:R<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^20 - 60*x^18 - 160*x^17 + 870*x^16 + 4320*x^15 - 3520*x^14 - 54960*x^13 - 68265*x^12 + 307840*x^11 + 947856*x^10 - 307920*x^9 - 4643510*x^8 - 3997440*x^7 + 8299980*x^6 + 8363824*x^5 - 19541415*x^4 - 16312320*x^3 + 14352120*x^2 - 23055840*x - 39496248);
 
Copy content oscar:Qx, x = polynomial_ring(QQ); K, a = number_field(x^20 - 60*x^18 - 160*x^17 + 870*x^16 + 4320*x^15 - 3520*x^14 - 54960*x^13 - 68265*x^12 + 307840*x^11 + 947856*x^10 - 307920*x^9 - 4643510*x^8 - 3997440*x^7 + 8299980*x^6 + 8363824*x^5 - 19541415*x^4 - 16312320*x^3 + 14352120*x^2 - 23055840*x - 39496248)
 

\( x^{20} - 60 x^{18} - 160 x^{17} + 870 x^{16} + 4320 x^{15} - 3520 x^{14} - 54960 x^{13} + \cdots - 39496248 \) Copy content Toggle raw display

Copy content comment:Defining polynomial
 
Copy content sage:K.defining_polynomial()
 
Copy content gp:K.pol
 
Copy content magma:DefiningPolynomial(K);
 
Copy content oscar:defining_polynomial(K)
 

Invariants

Degree:  $20$
Copy content comment:Degree over Q
 
Copy content sage:K.degree()
 
Copy content gp:poldegree(K.pol)
 
Copy content magma:Degree(K);
 
Copy content oscar:degree(K)
 
Signature:  $(4, 8)$
Copy content comment:Signature
 
Copy content sage:K.signature()
 
Copy content gp:K.sign
 
Copy content magma:Signature(K);
 
Copy content oscar:signature(K)
 
Discriminant:   \(50617612400283069972480000000000000000000000\) \(\medspace = 2^{55}\cdot 3^{20}\cdot 5^{22}\cdot 13^{2}\) Copy content Toggle raw display
Copy content comment:Discriminant
 
Copy content sage:K.disc()
 
Copy content gp:K.disc
 
Copy content magma:OK := Integers(K); Discriminant(OK);
 
Copy content oscar:OK = ring_of_integers(K); discriminant(OK)
 
Root discriminant:  \(153.18\)
Copy content comment:Root discriminant
 
Copy content sage:(K.disc().abs())^(1./K.degree())
 
Copy content gp:abs(K.disc)^(1/poldegree(K.pol))
 
Copy content magma:Abs(Discriminant(OK))^(1/Degree(K));
 
Copy content oscar:OK = ring_of_integers(K); (1.0 * abs(discriminant(OK)))^(1/degree(K))
 
Galois root discriminant:  not computed
Ramified primes:   \(2\), \(3\), \(5\), \(13\) Copy content Toggle raw display
Copy content comment:Ramified primes
 
Copy content sage:K.disc().support()
 
Copy content gp:factor(abs(K.disc))[,1]~
 
Copy content magma:PrimeDivisors(Discriminant(OK));
 
Copy content oscar:prime_divisors(discriminant(OK))
 
Discriminant root field:  \(\Q(\sqrt{2}) \)
$\Aut(K/\Q)$:   $C_1$
Copy content comment:Automorphisms
 
Copy content sage:K.automorphisms()
 
Copy content magma:Automorphisms(K);
 
Copy content oscar:automorphism_group(K)
 
This field is not Galois over $\Q$.
This is not a CM field.
This field has no CM subfields.

Integral basis (with respect to field generator \(a\))

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $a^{9}$, $\frac{1}{2}a^{10}-\frac{1}{2}a^{6}-\frac{1}{2}a^{2}$, $\frac{1}{4}a^{11}-\frac{1}{2}a^{9}+\frac{1}{4}a^{7}-\frac{1}{2}a^{5}-\frac{1}{4}a^{3}$, $\frac{1}{8}a^{12}-\frac{1}{4}a^{10}-\frac{1}{2}a^{9}+\frac{1}{8}a^{8}-\frac{1}{2}a^{7}-\frac{1}{4}a^{6}-\frac{1}{2}a^{5}-\frac{1}{8}a^{4}$, $\frac{1}{8}a^{13}-\frac{3}{8}a^{9}-\frac{1}{2}a^{8}+\frac{3}{8}a^{5}-\frac{1}{4}a^{3}-\frac{1}{2}a^{2}$, $\frac{1}{8}a^{14}+\frac{1}{8}a^{10}-\frac{1}{2}a^{9}-\frac{1}{8}a^{6}-\frac{1}{4}a^{4}-\frac{1}{2}a^{3}-\frac{1}{2}a^{2}$, $\frac{1}{24}a^{15}-\frac{1}{24}a^{14}+\frac{1}{24}a^{13}+\frac{1}{24}a^{12}-\frac{1}{24}a^{11}+\frac{1}{24}a^{10}+\frac{1}{24}a^{9}+\frac{5}{24}a^{8}+\frac{1}{24}a^{7}-\frac{3}{8}a^{6}+\frac{3}{8}a^{5}-\frac{1}{8}a^{4}-\frac{1}{3}a^{3}+\frac{1}{3}a^{2}-\frac{1}{3}a$, $\frac{1}{24}a^{16}-\frac{1}{24}a^{13}+\frac{1}{12}a^{10}-\frac{3}{8}a^{9}-\frac{1}{4}a^{8}-\frac{1}{3}a^{7}-\frac{1}{8}a^{5}-\frac{11}{24}a^{4}+\frac{1}{4}a^{3}-\frac{1}{2}a^{2}-\frac{1}{3}a$, $\frac{1}{72}a^{17}-\frac{1}{18}a^{14}+\frac{1}{24}a^{13}-\frac{1}{24}a^{12}+\frac{1}{36}a^{11}-\frac{1}{4}a^{10}+\frac{11}{24}a^{9}+\frac{25}{72}a^{8}-\frac{1}{2}a^{7}-\frac{5}{12}a^{6}-\frac{7}{36}a^{5}-\frac{1}{8}a^{4}-\frac{5}{12}a^{3}+\frac{7}{18}a^{2}-\frac{1}{3}a$, $\frac{1}{432}a^{18}-\frac{1}{144}a^{17}-\frac{1}{72}a^{16}-\frac{7}{432}a^{15}-\frac{1}{16}a^{14}-\frac{1}{24}a^{13}+\frac{17}{432}a^{12}+\frac{5}{144}a^{11}-\frac{11}{48}a^{10}+\frac{37}{108}a^{9}-\frac{5}{48}a^{8}+\frac{65}{144}a^{7}+\frac{47}{216}a^{6}+\frac{11}{144}a^{5}+\frac{17}{48}a^{4}-\frac{5}{108}a^{3}+\frac{4}{9}a^{2}-\frac{1}{6}a-\frac{1}{2}$, $\frac{1}{17\cdots 16}a^{19}+\frac{99\cdots 07}{48\cdots 56}a^{18}-\frac{37\cdots 55}{58\cdots 72}a^{17}+\frac{27\cdots 33}{17\cdots 16}a^{16}+\frac{30\cdots 51}{14\cdots 68}a^{15}-\frac{10\cdots 89}{19\cdots 24}a^{14}-\frac{50\cdots 95}{17\cdots 16}a^{13}-\frac{54\cdots 75}{29\cdots 36}a^{12}-\frac{66\cdots 31}{10\cdots 68}a^{11}+\frac{14\cdots 25}{17\cdots 16}a^{10}+\frac{41\cdots 31}{58\cdots 72}a^{9}+\frac{14\cdots 29}{14\cdots 68}a^{8}+\frac{21\cdots 63}{17\cdots 16}a^{7}+\frac{86\cdots 97}{21\cdots 36}a^{6}+\frac{60\cdots 79}{48\cdots 56}a^{5}-\frac{69\cdots 11}{17\cdots 16}a^{4}-\frac{15\cdots 31}{73\cdots 34}a^{3}-\frac{28\cdots 35}{12\cdots 39}a^{2}+\frac{13\cdots 08}{40\cdots 13}a-\frac{40\cdots 59}{27\cdots 42}$ Copy content Toggle raw display

Copy content comment:Integral basis
 
Copy content sage:K.integral_basis()
 
Copy content gp:K.zk
 
Copy content magma:IntegralBasis(K);
 
Copy content oscar:basis(OK)
 

Monogenic:  Not computed
Index:  $1$
Inessential primes:  None

Class group and class number

Ideal class group:  $C_{2}\times C_{2}$, which has order $4$ (assuming GRH)
Copy content comment:Class group
 
Copy content sage:K.class_group().invariants()
 
Copy content gp:K.clgp
 
Copy content magma:ClassGroup(K);
 
Copy content oscar:class_group(K)
 
Narrow class group:  $C_{2}\times C_{4}$, which has order $8$ (assuming GRH)
Copy content comment:Narrow class group
 
Copy content sage:K.narrow_class_group().invariants()
 
Copy content gp:bnfnarrow(K)
 
Copy content magma:NarrowClassGroup(K);
 

Unit group

Copy content comment:Unit group
 
Copy content sage:UK = K.unit_group()
 
Copy content magma:UK, fUK := UnitGroup(K);
 
Copy content oscar:UK, fUK = unit_group(OK)
 
Rank:  $11$
Copy content comment:Unit rank
 
Copy content sage:UK.rank()
 
Copy content gp:K.fu
 
Copy content magma:UnitRank(K);
 
Copy content oscar:rank(UK)
 
Torsion generator:   \( -1 \)  (order $2$) Copy content Toggle raw display
Copy content comment:Generator for roots of unity
 
Copy content sage:UK.torsion_generator()
 
Copy content gp:K.tu[2]
 
Copy content magma:K!f(TU.1) where TU,f is TorsionUnitGroup(K);
 
Copy content oscar:torsion_units_generator(OK)
 
Fundamental units:   $\frac{32\cdots 12}{10\cdots 51}a^{19}-\frac{55\cdots 37}{14\cdots 68}a^{18}-\frac{69\cdots 84}{36\cdots 17}a^{17}-\frac{74\cdots 49}{43\cdots 04}a^{16}+\frac{13\cdots 03}{36\cdots 17}a^{15}+\frac{62\cdots 31}{81\cdots 26}a^{14}-\frac{43\cdots 84}{10\cdots 51}a^{13}-\frac{22\cdots 45}{16\cdots 52}a^{12}+\frac{22\cdots 79}{12\cdots 39}a^{11}+\frac{13\cdots 43}{10\cdots 51}a^{10}+\frac{10\cdots 90}{36\cdots 17}a^{9}-\frac{10\cdots 65}{14\cdots 68}a^{8}-\frac{73\cdots 55}{10\cdots 51}a^{7}+\frac{38\cdots 51}{14\cdots 68}a^{6}+\frac{37\cdots 74}{12\cdots 39}a^{5}-\frac{94\cdots 87}{10\cdots 51}a^{4}-\frac{42\cdots 52}{40\cdots 13}a^{3}+\frac{25\cdots 94}{12\cdots 39}a^{2}+\frac{15\cdots 08}{13\cdots 71}a-\frac{45\cdots 05}{13\cdots 71}$, $\frac{15\cdots 27}{10\cdots 51}a^{19}-\frac{47\cdots 95}{14\cdots 68}a^{18}-\frac{29\cdots 62}{36\cdots 17}a^{17}-\frac{11\cdots 37}{21\cdots 02}a^{16}+\frac{16\cdots 70}{12\cdots 39}a^{15}+\frac{51\cdots 27}{16\cdots 52}a^{14}-\frac{13\cdots 30}{10\cdots 51}a^{13}-\frac{76\cdots 15}{14\cdots 68}a^{12}+\frac{23\cdots 46}{13\cdots 71}a^{11}+\frac{17\cdots 49}{43\cdots 04}a^{10}+\frac{63\cdots 80}{13\cdots 71}a^{9}-\frac{21\cdots 97}{14\cdots 68}a^{8}-\frac{37\cdots 63}{10\cdots 51}a^{7}+\frac{60\cdots 19}{36\cdots 17}a^{6}+\frac{10\cdots 00}{13\cdots 71}a^{5}-\frac{22\cdots 21}{43\cdots 04}a^{4}-\frac{54\cdots 92}{36\cdots 17}a^{3}+\frac{12\cdots 66}{12\cdots 39}a^{2}-\frac{17\cdots 52}{40\cdots 13}a-\frac{34\cdots 29}{13\cdots 71}$, $\frac{89\cdots 47}{87\cdots 08}a^{19}-\frac{86\cdots 11}{58\cdots 72}a^{18}-\frac{34\cdots 53}{58\cdots 72}a^{17}-\frac{84\cdots 03}{10\cdots 51}a^{16}+\frac{18\cdots 99}{19\cdots 24}a^{15}+\frac{56\cdots 69}{19\cdots 24}a^{14}-\frac{80\cdots 89}{10\cdots 51}a^{13}-\frac{25\cdots 89}{58\cdots 72}a^{12}-\frac{17\cdots 55}{19\cdots 24}a^{11}+\frac{53\cdots 81}{17\cdots 16}a^{10}+\frac{48\cdots 97}{97\cdots 12}a^{9}-\frac{53\cdots 03}{58\cdots 72}a^{8}-\frac{53\cdots 05}{17\cdots 16}a^{7}+\frac{21\cdots 53}{73\cdots 34}a^{6}+\frac{13\cdots 07}{19\cdots 24}a^{5}-\frac{26\cdots 09}{17\cdots 16}a^{4}-\frac{22\cdots 09}{14\cdots 68}a^{3}+\frac{37\cdots 27}{81\cdots 26}a^{2}+\frac{55\cdots 25}{81\cdots 26}a-\frac{78\cdots 47}{27\cdots 42}$, $\frac{98\cdots 29}{87\cdots 08}a^{19}-\frac{13\cdots 09}{29\cdots 36}a^{18}-\frac{42\cdots 21}{73\cdots 34}a^{17}-\frac{73\cdots 57}{43\cdots 04}a^{16}+\frac{23\cdots 00}{40\cdots 13}a^{15}+\frac{19\cdots 79}{48\cdots 56}a^{14}+\frac{19\cdots 81}{87\cdots 08}a^{13}-\frac{55\cdots 69}{14\cdots 68}a^{12}-\frac{14\cdots 86}{12\cdots 39}a^{11}+\frac{71\cdots 15}{21\cdots 02}a^{10}+\frac{89\cdots 79}{97\cdots 12}a^{9}+\frac{13\cdots 31}{73\cdots 34}a^{8}-\frac{10\cdots 97}{87\cdots 08}a^{7}-\frac{31\cdots 47}{29\cdots 36}a^{6}-\frac{15\cdots 19}{97\cdots 12}a^{5}+\frac{30\cdots 95}{43\cdots 04}a^{4}+\frac{30\cdots 35}{73\cdots 34}a^{3}+\frac{62\cdots 16}{12\cdots 39}a^{2}-\frac{40\cdots 45}{40\cdots 13}a-\frac{11\cdots 39}{13\cdots 71}$, $\frac{10\cdots 61}{97\cdots 12}a^{19}-\frac{10\cdots 12}{12\cdots 39}a^{18}-\frac{20\cdots 77}{32\cdots 04}a^{17}-\frac{11\cdots 15}{97\cdots 12}a^{16}+\frac{46\cdots 13}{48\cdots 56}a^{15}+\frac{15\cdots 74}{40\cdots 13}a^{14}-\frac{52\cdots 99}{97\cdots 12}a^{13}-\frac{12\cdots 41}{24\cdots 78}a^{12}-\frac{57\cdots 18}{13\cdots 71}a^{11}+\frac{14\cdots 63}{48\cdots 56}a^{10}+\frac{72\cdots 81}{97\cdots 12}a^{9}-\frac{72\cdots 61}{16\cdots 52}a^{8}-\frac{35\cdots 11}{97\cdots 12}a^{7}-\frac{64\cdots 83}{24\cdots 78}a^{6}+\frac{26\cdots 07}{54\cdots 84}a^{5}+\frac{30\cdots 21}{97\cdots 12}a^{4}-\frac{10\cdots 12}{12\cdots 39}a^{3}-\frac{10\cdots 71}{81\cdots 26}a^{2}-\frac{47\cdots 64}{40\cdots 13}a-\frac{49\cdots 12}{13\cdots 71}$, $\frac{16\cdots 69}{87\cdots 08}a^{19}-\frac{13\cdots 83}{32\cdots 04}a^{18}-\frac{30\cdots 75}{29\cdots 36}a^{17}-\frac{70\cdots 07}{87\cdots 08}a^{16}+\frac{13\cdots 81}{73\cdots 34}a^{15}+\frac{35\cdots 25}{81\cdots 26}a^{14}-\frac{17\cdots 59}{10\cdots 51}a^{13}-\frac{20\cdots 63}{29\cdots 36}a^{12}+\frac{49\cdots 65}{24\cdots 78}a^{11}+\frac{23\cdots 31}{43\cdots 04}a^{10}+\frac{23\cdots 99}{36\cdots 17}a^{9}-\frac{57\cdots 35}{29\cdots 36}a^{8}-\frac{40\cdots 99}{87\cdots 08}a^{7}+\frac{22\cdots 69}{97\cdots 12}a^{6}+\frac{10\cdots 69}{97\cdots 12}a^{5}-\frac{82\cdots 30}{10\cdots 51}a^{4}-\frac{78\cdots 16}{36\cdots 17}a^{3}+\frac{12\cdots 53}{81\cdots 26}a^{2}-\frac{58\cdots 65}{13\cdots 71}a-\frac{47\cdots 61}{13\cdots 71}$, $\frac{44\cdots 37}{14\cdots 68}a^{19}-\frac{38\cdots 75}{65\cdots 08}a^{18}-\frac{32\cdots 45}{19\cdots 24}a^{17}-\frac{51\cdots 77}{29\cdots 36}a^{16}+\frac{53\cdots 17}{19\cdots 24}a^{15}+\frac{14\cdots 43}{19\cdots 24}a^{14}-\frac{78\cdots 90}{36\cdots 17}a^{13}-\frac{22\cdots 59}{19\cdots 24}a^{12}-\frac{31\cdots 41}{19\cdots 24}a^{11}+\frac{45\cdots 33}{58\cdots 72}a^{10}+\frac{12\cdots 29}{97\cdots 12}a^{9}-\frac{13\cdots 79}{65\cdots 08}a^{8}-\frac{40\cdots 19}{58\cdots 72}a^{7}-\frac{10\cdots 35}{10\cdots 68}a^{6}+\frac{19\cdots 73}{19\cdots 24}a^{5}-\frac{43\cdots 49}{58\cdots 72}a^{4}-\frac{10\cdots 97}{48\cdots 56}a^{3}+\frac{40\cdots 31}{24\cdots 78}a^{2}+\frac{68\cdots 81}{81\cdots 26}a-\frac{78\cdots 49}{27\cdots 42}$, $\frac{76\cdots 53}{17\cdots 16}a^{19}-\frac{28\cdots 79}{19\cdots 24}a^{18}-\frac{17\cdots 59}{73\cdots 34}a^{17}+\frac{20\cdots 13}{17\cdots 16}a^{16}+\frac{27\cdots 77}{58\cdots 72}a^{15}+\frac{65\cdots 93}{12\cdots 39}a^{14}-\frac{95\cdots 49}{17\cdots 16}a^{13}-\frac{80\cdots 53}{58\cdots 72}a^{12}+\frac{57\cdots 47}{19\cdots 24}a^{11}+\frac{12\cdots 17}{87\cdots 08}a^{10}+\frac{14\cdots 19}{58\cdots 72}a^{9}-\frac{49\cdots 57}{58\cdots 72}a^{8}-\frac{96\cdots 09}{10\cdots 51}a^{7}+\frac{50\cdots 39}{19\cdots 24}a^{6}+\frac{28\cdots 07}{65\cdots 08}a^{5}-\frac{44\cdots 17}{87\cdots 08}a^{4}-\frac{15\cdots 55}{14\cdots 68}a^{3}+\frac{18\cdots 41}{24\cdots 78}a^{2}+\frac{28\cdots 09}{27\cdots 42}a-\frac{36\cdots 68}{13\cdots 71}$, $\frac{16\cdots 99}{21\cdots 36}a^{19}-\frac{22\cdots 11}{58\cdots 72}a^{18}-\frac{33\cdots 57}{97\cdots 12}a^{17}+\frac{16\cdots 31}{19\cdots 24}a^{16}+\frac{34\cdots 59}{58\cdots 72}a^{15}-\frac{15\cdots 06}{40\cdots 13}a^{14}-\frac{44\cdots 63}{65\cdots 08}a^{13}-\frac{36\cdots 21}{58\cdots 72}a^{12}+\frac{91\cdots 65}{19\cdots 24}a^{11}+\frac{29\cdots 55}{32\cdots 04}a^{10}-\frac{89\cdots 49}{58\cdots 72}a^{9}-\frac{12\cdots 07}{21\cdots 36}a^{8}+\frac{10\cdots 13}{48\cdots 56}a^{7}+\frac{98\cdots 79}{58\cdots 72}a^{6}-\frac{22\cdots 37}{19\cdots 24}a^{5}-\frac{15\cdots 69}{54\cdots 84}a^{4}+\frac{48\cdots 87}{14\cdots 68}a^{3}-\frac{15\cdots 25}{24\cdots 78}a^{2}-\frac{12\cdots 33}{27\cdots 42}a+\frac{24\cdots 63}{13\cdots 71}$, $\frac{65\cdots 87}{17\cdots 16}a^{19}+\frac{52\cdots 57}{58\cdots 72}a^{18}-\frac{31\cdots 95}{14\cdots 68}a^{17}-\frac{19\cdots 95}{17\cdots 16}a^{16}+\frac{21\cdots 95}{19\cdots 24}a^{15}+\frac{34\cdots 37}{16\cdots 52}a^{14}+\frac{58\cdots 81}{17\cdots 16}a^{13}-\frac{99\cdots 09}{58\cdots 72}a^{12}-\frac{15\cdots 65}{21\cdots 36}a^{11}-\frac{14\cdots 91}{87\cdots 08}a^{10}+\frac{29\cdots 57}{65\cdots 08}a^{9}+\frac{55\cdots 07}{58\cdots 72}a^{8}-\frac{30\cdots 05}{87\cdots 08}a^{7}-\frac{23\cdots 93}{58\cdots 72}a^{6}-\frac{36\cdots 51}{65\cdots 08}a^{5}-\frac{29\cdots 51}{87\cdots 08}a^{4}-\frac{72\cdots 69}{14\cdots 68}a^{3}-\frac{10\cdots 59}{12\cdots 39}a^{2}-\frac{53\cdots 55}{27\cdots 42}a+\frac{36\cdots 06}{13\cdots 71}$, $\frac{26\cdots 21}{21\cdots 02}a^{19}-\frac{44\cdots 05}{14\cdots 68}a^{18}-\frac{19\cdots 01}{29\cdots 36}a^{17}-\frac{27\cdots 07}{87\cdots 08}a^{16}+\frac{33\cdots 43}{29\cdots 36}a^{15}+\frac{13\cdots 69}{54\cdots 84}a^{14}-\frac{90\cdots 89}{87\cdots 08}a^{13}-\frac{99\cdots 37}{24\cdots 78}a^{12}+\frac{19\cdots 53}{97\cdots 12}a^{11}+\frac{35\cdots 13}{10\cdots 51}a^{10}+\frac{98\cdots 99}{29\cdots 36}a^{9}-\frac{17\cdots 89}{14\cdots 68}a^{8}-\frac{22\cdots 75}{87\cdots 08}a^{7}+\frac{58\cdots 15}{36\cdots 17}a^{6}+\frac{14\cdots 23}{24\cdots 78}a^{5}-\frac{43\cdots 39}{87\cdots 08}a^{4}-\frac{27\cdots 73}{24\cdots 78}a^{3}+\frac{20\cdots 35}{24\cdots 78}a^{2}-\frac{14\cdots 26}{40\cdots 13}a-\frac{25\cdots 26}{13\cdots 71}$ Copy content Toggle raw display (assuming GRH)
Copy content comment:Fundamental units
 
Copy content sage:UK.fundamental_units()
 
Copy content gp:K.fu
 
Copy content magma:[K|fUK(g): g in Generators(UK)];
 
Copy content oscar:[K(fUK(a)) for a in gens(UK)]
 
Regulator:  \( 222617324287000 \) (assuming GRH)
Copy content comment:Regulator
 
Copy content sage:K.regulator()
 
Copy content gp:K.reg
 
Copy content magma:Regulator(K);
 
Copy content oscar:regulator(K)
 
Unit signature rank:  \( 3 \) (assuming GRH)

Class number formula

\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{4}\cdot(2\pi)^{8}\cdot 222617324287000 \cdot 4}{2\cdot\sqrt{50617612400283069972480000000000000000000000}}\cr\approx \mathstrut & 2.43218752022106 \end{aligned}\] (assuming GRH)

Copy content comment:Analytic class number formula
 
Copy content sage:# self-contained SageMath code snippet to compute the analytic class number formula x = polygen(QQ); K.<a> = NumberField(x^20 - 60*x^18 - 160*x^17 + 870*x^16 + 4320*x^15 - 3520*x^14 - 54960*x^13 - 68265*x^12 + 307840*x^11 + 947856*x^10 - 307920*x^9 - 4643510*x^8 - 3997440*x^7 + 8299980*x^6 + 8363824*x^5 - 19541415*x^4 - 16312320*x^3 + 14352120*x^2 - 23055840*x - 39496248) DK = K.disc(); r1,r2 = K.signature(); RK = K.regulator(); RR = RK.parent() hK = K.class_number(); wK = K.unit_group().torsion_generator().order(); 2^r1 * (2*RR(pi))^r2 * RK * hK / (wK * RR(sqrt(abs(DK))))
 
Copy content gp:\\ self-contained Pari/GP code snippet to compute the analytic class number formula K = bnfinit(x^20 - 60*x^18 - 160*x^17 + 870*x^16 + 4320*x^15 - 3520*x^14 - 54960*x^13 - 68265*x^12 + 307840*x^11 + 947856*x^10 - 307920*x^9 - 4643510*x^8 - 3997440*x^7 + 8299980*x^6 + 8363824*x^5 - 19541415*x^4 - 16312320*x^3 + 14352120*x^2 - 23055840*x - 39496248, 1); [polcoeff (lfunrootres (lfuncreate (K))[1][1][2], -1), 2^K.r1 * (2*Pi)^K.r2 * K.reg * K.no / (K.tu[1] * sqrt (abs (K.disc)))]
 
Copy content magma:/* self-contained Magma code snippet to compute the analytic class number formula */ Qx<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^20 - 60*x^18 - 160*x^17 + 870*x^16 + 4320*x^15 - 3520*x^14 - 54960*x^13 - 68265*x^12 + 307840*x^11 + 947856*x^10 - 307920*x^9 - 4643510*x^8 - 3997440*x^7 + 8299980*x^6 + 8363824*x^5 - 19541415*x^4 - 16312320*x^3 + 14352120*x^2 - 23055840*x - 39496248); OK := Integers(K); DK := Discriminant(OK); UK, fUK := UnitGroup(OK); clK, fclK := ClassGroup(OK); r1,r2 := Signature(K); RK := Regulator(K); RR := Parent(RK); hK := #clK; wK := #TorsionSubgroup(UK); 2^r1 * (2*Pi(RR))^r2 * RK * hK / (wK * Sqrt(RR!Abs(DK)));
 
Copy content oscar:# self-contained Oscar code snippet to compute the analytic class number formula Qx, x = polynomial_ring(QQ); K, a = number_field(x^20 - 60*x^18 - 160*x^17 + 870*x^16 + 4320*x^15 - 3520*x^14 - 54960*x^13 - 68265*x^12 + 307840*x^11 + 947856*x^10 - 307920*x^9 - 4643510*x^8 - 3997440*x^7 + 8299980*x^6 + 8363824*x^5 - 19541415*x^4 - 16312320*x^3 + 14352120*x^2 - 23055840*x - 39496248); OK = ring_of_integers(K); DK = discriminant(OK); UK, fUK = unit_group(OK); clK, fclK = class_group(OK); r1,r2 = signature(K); RK = regulator(K); RR = parent(RK); hK = order(clK); wK = torsion_units_order(K); 2^r1 * (2*pi)^r2 * RK * hK / (wK * sqrt(RR(abs(DK))))
 

Galois group

$C_2^8.(F_5\times S_4)$ (as 20T811):

Copy content comment:Galois group
 
Copy content sage:K.galois_group()
 
Copy content gp:polgalois(K.pol)
 
Copy content magma:G = GaloisGroup(K);
 
Copy content oscar:G, Gtx = galois_group(K); degree(K) > 1 ? (G, transitive_group_identification(G)) : (G, nothing)
 
A solvable group of order 122880
The 80 conjugacy class representatives for $C_2^8.(F_5\times S_4)$
Character table for $C_2^8.(F_5\times S_4)$

Intermediate fields

5.1.200000.1

Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.

Copy content comment:Intermediate fields
 
Copy content sage:K.subfields()[1:-1]
 
Copy content gp:L = nfsubfields(K); L[2..length(L)]
 
Copy content magma:L := Subfields(K); L[2..#L];
 
Copy content oscar:subfields(K)[2:end-1]
 

Sibling fields

Degree 30 siblings: data not computed
Degree 40 siblings: data not computed
Minimal sibling: This field is its own minimal sibling

Frobenius cycle types

$p$ $2$ $3$ $5$ $7$ $11$ $13$ $17$ $19$ $23$ $29$ $31$ $37$ $41$ $43$ $47$ $53$ $59$
Cycle type R R R ${\href{/padicField/7.12.0.1}{12} }{,}\,{\href{/padicField/7.4.0.1}{4} }{,}\,{\href{/padicField/7.3.0.1}{3} }{,}\,{\href{/padicField/7.1.0.1}{1} }$ ${\href{/padicField/11.4.0.1}{4} }^{4}{,}\,{\href{/padicField/11.2.0.1}{2} }{,}\,{\href{/padicField/11.1.0.1}{1} }^{2}$ R ${\href{/padicField/17.12.0.1}{12} }{,}\,{\href{/padicField/17.4.0.1}{4} }{,}\,{\href{/padicField/17.3.0.1}{3} }{,}\,{\href{/padicField/17.1.0.1}{1} }$ ${\href{/padicField/19.10.0.1}{10} }{,}\,{\href{/padicField/19.5.0.1}{5} }^{2}$ ${\href{/padicField/23.4.0.1}{4} }^{4}{,}\,{\href{/padicField/23.2.0.1}{2} }^{2}$ ${\href{/padicField/29.10.0.1}{10} }{,}\,{\href{/padicField/29.5.0.1}{5} }^{2}$ ${\href{/padicField/31.10.0.1}{10} }^{2}$ ${\href{/padicField/37.4.0.1}{4} }^{5}$ $15{,}\,{\href{/padicField/41.5.0.1}{5} }$ ${\href{/padicField/43.8.0.1}{8} }^{2}{,}\,{\href{/padicField/43.2.0.1}{2} }{,}\,{\href{/padicField/43.1.0.1}{1} }^{2}$ ${\href{/padicField/47.12.0.1}{12} }{,}\,{\href{/padicField/47.4.0.1}{4} }{,}\,{\href{/padicField/47.3.0.1}{3} }{,}\,{\href{/padicField/47.1.0.1}{1} }$ ${\href{/padicField/53.8.0.1}{8} }^{2}{,}\,{\href{/padicField/53.2.0.1}{2} }{,}\,{\href{/padicField/53.1.0.1}{1} }^{2}$ $20$

In the table, R denotes a ramified prime. Cycle lengths which are repeated in a cycle type are indicated by exponents.

Copy content comment:Frobenius cycle types
 
Copy content sage:# to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Sage: p = 7; [(e, pr.norm().valuation(p)) for pr,e in K.factor(p)]
 
Copy content gp:\\ to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Pari: p = 7; pfac = idealprimedec(K, p); vector(length(pfac), j, [pfac[j][3], pfac[j][4]])
 
Copy content magma:// to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Magma: p := 7; [<pr[2], Valuation(Norm(pr[1]), p)> : pr in Factorization(p*Integers(K))];
 
Copy content oscar:# to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Oscar: p = 7; pfac = factor(ideal(ring_of_integers(K), p)); [(e, valuation(norm(pr),p)) for (pr,e) in pfac]
 

Local algebras for ramified primes

$p$LabelPolynomial $e$ $f$ $c$ Galois group Slope content
\(2\) Copy content Toggle raw display 2.1.4.11a1.9$x^{4} + 4 x^{2} + 2$$4$$1$$11$$C_4$$$[3, 4]$$
2.2.8.44d13.54$x^{16} + 12 x^{15} + 64 x^{14} + 224 x^{13} + 580 x^{12} + 1188 x^{11} + 2000 x^{10} + 2836 x^{9} + 3437 x^{8} + 3580 x^{7} + 3204 x^{6} + 2444 x^{5} + 1572 x^{4} + 840 x^{3} + 368 x^{2} + 132 x + 31$$8$$2$$44$16T236$$[2, 2, 2, 3, \frac{7}{2}]^{4}$$
\(3\) Copy content Toggle raw display $\Q_{3}$$x + 1$$1$$1$$0$Trivial$$[\ ]$$
3.1.3.4a1.1$x^{3} + 3 x^{2} + 3$$3$$1$$4$$S_3$$$[2]^{2}$$
3.4.1.0a1.1$x^{4} + 2 x^{3} + 2$$1$$4$$0$$C_4$$$[\ ]^{4}$$
3.4.3.16a1.1$x^{12} + 6 x^{11} + 12 x^{10} + 8 x^{9} + 9 x^{8} + 36 x^{7} + 36 x^{6} + 24 x^{4} + 48 x^{3} + 23$$3$$4$$16$$C_3 : C_4$$$[2]^{4}$$
\(5\) Copy content Toggle raw display 5.1.5.5a1.4$x^{5} + 20 x + 5$$5$$1$$5$$F_5$$$[\frac{5}{4}]_{4}$$
5.1.15.17a1.4$x^{15} + 20 x^{3} + 5$$15$$1$$17$$F_5 \times S_3$$$[\frac{5}{4}]_{12}^{2}$$
\(13\) Copy content Toggle raw display 13.2.2.2a1.1$x^{4} + 24 x^{3} + 148 x^{2} + 61 x + 4$$2$$2$$2$$C_4$$$[\ ]_{2}^{2}$$
13.8.1.0a1.1$x^{8} + 8 x^{4} + 12 x^{3} + 2 x^{2} + 3 x + 2$$1$$8$$0$$C_8$$$[\ ]^{8}$$
13.8.1.0a1.1$x^{8} + 8 x^{4} + 12 x^{3} + 2 x^{2} + 3 x + 2$$1$$8$$0$$C_8$$$[\ ]^{8}$$

Spectrum of ring of integers

(0)(0)(2)(3)(5)(7)(11)(13)(17)(19)(23)(29)(31)(37)(41)(43)(47)(53)(59)