Properties

Label 20.4.242...000.1
Degree $20$
Signature $(4, 8)$
Discriminant $2.426\times 10^{40}$
Root discriminant \(104.53\)
Ramified primes $2,5,7$
Class number $1$ (GRH)
Class group trivial (GRH)
Galois group $C_2^8.(S_3\times F_5)$ (as 20T559)

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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 - 5*x^19 - 25*x^18 + 35*x^17 + 1000*x^16 - 2478*x^15 - 12250*x^14 + 74190*x^13 - 130285*x^12 + 136445*x^11 - 388435*x^10 + 970665*x^9 + 1784260*x^8 - 11407390*x^7 + 21264310*x^6 - 16392250*x^5 - 5760615*x^4 - 4392785*x^3 + 55965075*x^2 - 26870825*x + 8792410)
 
Copy content gp:K = bnfinit(y^20 - 5*y^19 - 25*y^18 + 35*y^17 + 1000*y^16 - 2478*y^15 - 12250*y^14 + 74190*y^13 - 130285*y^12 + 136445*y^11 - 388435*y^10 + 970665*y^9 + 1784260*y^8 - 11407390*y^7 + 21264310*y^6 - 16392250*y^5 - 5760615*y^4 - 4392785*y^3 + 55965075*y^2 - 26870825*y + 8792410, 1)
 
Copy content magma:R<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^20 - 5*x^19 - 25*x^18 + 35*x^17 + 1000*x^16 - 2478*x^15 - 12250*x^14 + 74190*x^13 - 130285*x^12 + 136445*x^11 - 388435*x^10 + 970665*x^9 + 1784260*x^8 - 11407390*x^7 + 21264310*x^6 - 16392250*x^5 - 5760615*x^4 - 4392785*x^3 + 55965075*x^2 - 26870825*x + 8792410);
 
Copy content oscar:Qx, x = polynomial_ring(QQ); K, a = number_field(x^20 - 5*x^19 - 25*x^18 + 35*x^17 + 1000*x^16 - 2478*x^15 - 12250*x^14 + 74190*x^13 - 130285*x^12 + 136445*x^11 - 388435*x^10 + 970665*x^9 + 1784260*x^8 - 11407390*x^7 + 21264310*x^6 - 16392250*x^5 - 5760615*x^4 - 4392785*x^3 + 55965075*x^2 - 26870825*x + 8792410)
 

\( x^{20} - 5 x^{19} - 25 x^{18} + 35 x^{17} + 1000 x^{16} - 2478 x^{15} - 12250 x^{14} + 74190 x^{13} + \cdots + 8792410 \) 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:   \(24264439127689134080000000000000000000000\) \(\medspace = 2^{55}\cdot 5^{22}\cdot 7^{10}\) 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:  \(104.53\)
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:   \(2\), \(5\), \(7\) 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 \(a\))

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $a^{9}$, $a^{10}$, $\frac{1}{2}a^{11}-\frac{1}{2}a^{9}-\frac{1}{2}a^{7}-\frac{1}{2}a^{5}-\frac{1}{2}a^{3}-\frac{1}{2}a$, $\frac{1}{2}a^{12}-\frac{1}{2}a^{10}-\frac{1}{2}a^{8}-\frac{1}{2}a^{6}-\frac{1}{2}a^{4}-\frac{1}{2}a^{2}$, $\frac{1}{2}a^{13}-\frac{1}{2}a$, $\frac{1}{4}a^{14}-\frac{1}{4}a^{12}-\frac{1}{4}a^{11}+\frac{1}{4}a^{10}-\frac{1}{4}a^{9}+\frac{1}{4}a^{8}-\frac{1}{4}a^{7}-\frac{1}{4}a^{6}-\frac{1}{4}a^{5}-\frac{1}{4}a^{4}+\frac{1}{4}a^{3}+\frac{1}{4}a-\frac{1}{2}$, $\frac{1}{4}a^{15}-\frac{1}{4}a^{13}-\frac{1}{4}a^{12}-\frac{1}{4}a^{11}-\frac{1}{4}a^{10}-\frac{1}{4}a^{9}-\frac{1}{4}a^{8}+\frac{1}{4}a^{7}-\frac{1}{4}a^{6}+\frac{1}{4}a^{5}+\frac{1}{4}a^{4}-\frac{1}{2}a^{3}+\frac{1}{4}a^{2}$, $\frac{1}{4}a^{16}-\frac{1}{4}a^{13}-\frac{1}{2}a^{10}-\frac{1}{2}a^{6}-\frac{1}{2}a^{5}-\frac{1}{4}a^{4}-\frac{1}{2}a^{2}-\frac{1}{4}a-\frac{1}{2}$, $\frac{1}{20}a^{17}-\frac{1}{20}a^{16}-\frac{1}{20}a^{15}-\frac{1}{2}a^{9}-\frac{1}{2}a^{8}-\frac{1}{2}a^{7}+\frac{1}{4}a^{5}-\frac{1}{4}a^{4}-\frac{1}{4}a^{3}$, $\frac{1}{20}a^{18}-\frac{1}{10}a^{16}-\frac{1}{20}a^{15}-\frac{1}{2}a^{10}-\frac{1}{2}a^{7}+\frac{1}{4}a^{6}-\frac{1}{2}a^{4}-\frac{1}{4}a^{3}$, $\frac{1}{32\cdots 00}a^{19}+\frac{99\cdots 97}{80\cdots 75}a^{18}-\frac{33\cdots 24}{80\cdots 75}a^{17}+\frac{19\cdots 09}{10\cdots 00}a^{16}-\frac{32\cdots 99}{32\cdots 00}a^{15}-\frac{77\cdots 93}{64\cdots 26}a^{14}-\frac{30\cdots 01}{43\cdots 84}a^{13}-\frac{30\cdots 19}{21\cdots 20}a^{12}+\frac{91\cdots 67}{64\cdots 60}a^{11}-\frac{21\cdots 81}{12\cdots 52}a^{10}+\frac{71\cdots 31}{21\cdots 20}a^{9}-\frac{97\cdots 01}{21\cdots 20}a^{8}-\frac{48\cdots 08}{16\cdots 15}a^{7}+\frac{63\cdots 57}{21\cdots 20}a^{6}+\frac{29\cdots 51}{12\cdots 52}a^{5}-\frac{41\cdots 52}{10\cdots 21}a^{4}-\frac{23\cdots 74}{53\cdots 05}a^{3}+\frac{27\cdots 59}{64\cdots 60}a^{2}+\frac{68\cdots 63}{16\cdots 15}a-\frac{57\cdots 61}{16\cdots 15}$ 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:  No
Index:  Not computed
Inessential primes:  $2$

Class group and class number

Ideal class group:  Trivial group, which has order $1$ (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:  Trivial group, which has order $1$ (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:   $\frac{52\cdots 71}{61\cdots 50}a^{19}-\frac{14\cdots 31}{30\cdots 75}a^{18}-\frac{12\cdots 11}{61\cdots 50}a^{17}+\frac{25\cdots 07}{61\cdots 50}a^{16}+\frac{26\cdots 38}{30\cdots 75}a^{15}-\frac{63\cdots 41}{24\cdots 78}a^{14}-\frac{12\cdots 64}{12\cdots 39}a^{13}+\frac{87\cdots 73}{12\cdots 90}a^{12}-\frac{15\cdots 23}{12\cdots 90}a^{11}+\frac{25\cdots 21}{24\cdots 78}a^{10}-\frac{36\cdots 47}{12\cdots 90}a^{9}+\frac{10\cdots 57}{12\cdots 90}a^{8}+\frac{11\cdots 19}{61\cdots 95}a^{7}-\frac{13\cdots 59}{12\cdots 90}a^{6}+\frac{22\cdots 62}{12\cdots 39}a^{5}-\frac{11\cdots 68}{12\cdots 39}a^{4}-\frac{16\cdots 83}{12\cdots 90}a^{3}+\frac{46\cdots 92}{61\cdots 95}a^{2}+\frac{62\cdots 97}{12\cdots 90}a-\frac{39\cdots 02}{61\cdots 95}$, $\frac{33\cdots 16}{30\cdots 75}a^{19}-\frac{15\cdots 92}{30\cdots 75}a^{18}-\frac{89\cdots 21}{30\cdots 75}a^{17}+\frac{18\cdots 09}{61\cdots 50}a^{16}+\frac{33\cdots 76}{30\cdots 75}a^{15}-\frac{59\cdots 15}{24\cdots 78}a^{14}-\frac{17\cdots 25}{12\cdots 39}a^{13}+\frac{47\cdots 13}{61\cdots 95}a^{12}-\frac{73\cdots 03}{61\cdots 95}a^{11}+\frac{12\cdots 02}{12\cdots 39}a^{10}-\frac{21\cdots 47}{61\cdots 95}a^{9}+\frac{56\cdots 67}{61\cdots 95}a^{8}+\frac{14\cdots 53}{61\cdots 95}a^{7}-\frac{74\cdots 94}{61\cdots 95}a^{6}+\frac{24\cdots 58}{12\cdots 39}a^{5}-\frac{24\cdots 83}{24\cdots 78}a^{4}-\frac{87\cdots 63}{61\cdots 95}a^{3}-\frac{17\cdots 27}{12\cdots 90}a^{2}+\frac{33\cdots 82}{61\cdots 95}a+\frac{24\cdots 61}{61\cdots 95}$, $\frac{14\cdots 69}{16\cdots 50}a^{19}-\frac{85\cdots 51}{32\cdots 00}a^{18}-\frac{11\cdots 83}{32\cdots 00}a^{17}+\frac{99\cdots 67}{10\cdots 00}a^{16}+\frac{32\cdots 43}{32\cdots 00}a^{15}-\frac{81\cdots 37}{12\cdots 52}a^{14}-\frac{80\cdots 45}{43\cdots 84}a^{13}+\frac{62\cdots 49}{10\cdots 10}a^{12}+\frac{73\cdots 94}{16\cdots 15}a^{11}-\frac{27\cdots 43}{64\cdots 26}a^{10}+\frac{85\cdots 59}{10\cdots 10}a^{9}-\frac{13\cdots 29}{10\cdots 10}a^{8}+\frac{91\cdots 01}{16\cdots 15}a^{7}-\frac{26\cdots 99}{21\cdots 20}a^{6}-\frac{31\cdots 01}{12\cdots 52}a^{5}+\frac{30\cdots 15}{43\cdots 84}a^{4}-\frac{39\cdots 63}{21\cdots 20}a^{3}+\frac{13\cdots 47}{64\cdots 60}a^{2}-\frac{55\cdots 59}{64\cdots 60}a+\frac{68\cdots 69}{32\cdots 30}$, $\frac{21\cdots 47}{32\cdots 00}a^{19}-\frac{25\cdots 56}{80\cdots 75}a^{18}-\frac{56\cdots 77}{32\cdots 00}a^{17}+\frac{16\cdots 43}{10\cdots 00}a^{16}+\frac{21\cdots 97}{32\cdots 00}a^{15}-\frac{92\cdots 93}{64\cdots 26}a^{14}-\frac{35\cdots 09}{43\cdots 84}a^{13}+\frac{24\cdots 83}{53\cdots 05}a^{12}-\frac{12\cdots 89}{16\cdots 15}a^{11}+\frac{66\cdots 51}{64\cdots 26}a^{10}-\frac{14\cdots 92}{53\cdots 05}a^{9}+\frac{32\cdots 57}{53\cdots 05}a^{8}+\frac{72\cdots 11}{64\cdots 60}a^{7}-\frac{71\cdots 13}{10\cdots 10}a^{6}+\frac{17\cdots 19}{12\cdots 52}a^{5}-\frac{54\cdots 39}{43\cdots 84}a^{4}-\frac{34\cdots 87}{21\cdots 20}a^{3}-\frac{14\cdots 68}{16\cdots 15}a^{2}+\frac{32\cdots 19}{64\cdots 60}a-\frac{51\cdots 79}{32\cdots 30}$, $\frac{10\cdots 43}{16\cdots 50}a^{19}+\frac{21\cdots 33}{32\cdots 00}a^{18}-\frac{17\cdots 11}{32\cdots 00}a^{17}-\frac{16\cdots 63}{53\cdots 50}a^{16}+\frac{22\cdots 51}{32\cdots 00}a^{15}+\frac{12\cdots 31}{12\cdots 52}a^{14}-\frac{41\cdots 49}{21\cdots 42}a^{13}-\frac{13\cdots 37}{10\cdots 10}a^{12}+\frac{15\cdots 61}{32\cdots 30}a^{11}-\frac{46\cdots 21}{32\cdots 63}a^{10}-\frac{35\cdots 41}{53\cdots 05}a^{9}-\frac{40\cdots 53}{10\cdots 10}a^{8}+\frac{23\cdots 89}{32\cdots 30}a^{7}+\frac{67\cdots 27}{21\cdots 20}a^{6}-\frac{91\cdots 53}{12\cdots 52}a^{5}-\frac{22\cdots 58}{10\cdots 21}a^{4}+\frac{13\cdots 99}{21\cdots 20}a^{3}+\frac{69\cdots 09}{64\cdots 60}a^{2}-\frac{10\cdots 92}{16\cdots 15}a+\frac{36\cdots 44}{16\cdots 15}$, $\frac{41\cdots 63}{32\cdots 00}a^{19}-\frac{19\cdots 31}{32\cdots 00}a^{18}-\frac{11\cdots 63}{32\cdots 00}a^{17}+\frac{35\cdots 97}{10\cdots 00}a^{16}+\frac{10\cdots 32}{80\cdots 75}a^{15}-\frac{35\cdots 37}{12\cdots 52}a^{14}-\frac{72\cdots 01}{43\cdots 84}a^{13}+\frac{19\cdots 93}{21\cdots 20}a^{12}-\frac{86\cdots 59}{64\cdots 60}a^{11}+\frac{15\cdots 29}{12\cdots 52}a^{10}-\frac{95\cdots 57}{21\cdots 20}a^{9}+\frac{23\cdots 87}{21\cdots 20}a^{8}+\frac{88\cdots 57}{32\cdots 30}a^{7}-\frac{14\cdots 57}{10\cdots 10}a^{6}+\frac{14\cdots 63}{64\cdots 26}a^{5}-\frac{12\cdots 03}{10\cdots 21}a^{4}-\frac{30\cdots 33}{21\cdots 20}a^{3}-\frac{15\cdots 42}{16\cdots 15}a^{2}+\frac{22\cdots 53}{32\cdots 30}a-\frac{13\cdots 78}{16\cdots 15}$, $\frac{78\cdots 96}{16\cdots 15}a^{19}+\frac{18\cdots 04}{16\cdots 15}a^{18}-\frac{62\cdots 49}{64\cdots 60}a^{17}-\frac{35\cdots 38}{10\cdots 21}a^{16}+\frac{50\cdots 75}{32\cdots 63}a^{15}+\frac{95\cdots 15}{64\cdots 26}a^{14}-\frac{11\cdots 19}{21\cdots 42}a^{13}-\frac{74\cdots 51}{43\cdots 84}a^{12}+\frac{15\cdots 09}{12\cdots 52}a^{11}-\frac{23\cdots 47}{12\cdots 52}a^{10}+\frac{38\cdots 93}{43\cdots 84}a^{9}-\frac{26\cdots 61}{43\cdots 84}a^{8}+\frac{19\cdots 77}{12\cdots 52}a^{7}+\frac{10\cdots 19}{43\cdots 84}a^{6}-\frac{60\cdots 16}{32\cdots 63}a^{5}+\frac{12\cdots 85}{43\cdots 84}a^{4}-\frac{70\cdots 19}{43\cdots 84}a^{3}-\frac{27\cdots 39}{12\cdots 52}a^{2}-\frac{11\cdots 67}{12\cdots 52}a+\frac{72\cdots 13}{64\cdots 26}$, $\frac{55\cdots 57}{64\cdots 60}a^{19}-\frac{87\cdots 03}{64\cdots 60}a^{18}+\frac{70\cdots 41}{32\cdots 30}a^{17}+\frac{10\cdots 29}{53\cdots 05}a^{16}+\frac{64\cdots 37}{64\cdots 60}a^{15}-\frac{12\cdots 61}{12\cdots 52}a^{14}+\frac{40\cdots 87}{43\cdots 84}a^{13}+\frac{44\cdots 59}{43\cdots 84}a^{12}-\frac{78\cdots 53}{12\cdots 52}a^{11}+\frac{25\cdots 95}{12\cdots 52}a^{10}-\frac{26\cdots 49}{43\cdots 84}a^{9}+\frac{64\cdots 15}{43\cdots 84}a^{8}-\frac{11\cdots 14}{32\cdots 63}a^{7}+\frac{63\cdots 25}{10\cdots 21}a^{6}-\frac{11\cdots 67}{12\cdots 52}a^{5}+\frac{11\cdots 89}{43\cdots 84}a^{4}-\frac{76\cdots 17}{10\cdots 21}a^{3}+\frac{77\cdots 39}{64\cdots 26}a^{2}-\frac{16\cdots 08}{32\cdots 63}a+\frac{36\cdots 27}{32\cdots 63}$, $\frac{42\cdots 31}{10\cdots 00}a^{19}-\frac{17\cdots 07}{10\cdots 00}a^{18}-\frac{12\cdots 51}{10\cdots 00}a^{17}+\frac{28\cdots 91}{53\cdots 50}a^{16}+\frac{21\cdots 33}{53\cdots 50}a^{15}-\frac{27\cdots 23}{43\cdots 84}a^{14}-\frac{11\cdots 57}{21\cdots 42}a^{13}+\frac{53\cdots 83}{21\cdots 20}a^{12}-\frac{61\cdots 93}{21\cdots 20}a^{11}+\frac{78\cdots 83}{43\cdots 84}a^{10}-\frac{26\cdots 37}{21\cdots 20}a^{9}+\frac{57\cdots 97}{21\cdots 20}a^{8}+\frac{53\cdots 67}{53\cdots 05}a^{7}-\frac{20\cdots 31}{53\cdots 05}a^{6}+\frac{10\cdots 49}{21\cdots 42}a^{5}-\frac{26\cdots 87}{43\cdots 84}a^{4}-\frac{12\cdots 63}{21\cdots 20}a^{3}-\frac{27\cdots 49}{53\cdots 05}a^{2}+\frac{43\cdots 37}{21\cdots 20}a+\frac{80\cdots 63}{10\cdots 10}$, $\frac{10\cdots 83}{26\cdots 25}a^{19}-\frac{29\cdots 99}{10\cdots 00}a^{18}-\frac{42\cdots 37}{10\cdots 00}a^{17}+\frac{22\cdots 59}{10\cdots 00}a^{16}+\frac{36\cdots 37}{10\cdots 00}a^{15}-\frac{70\cdots 97}{43\cdots 84}a^{14}-\frac{53\cdots 27}{43\cdots 84}a^{13}+\frac{32\cdots 23}{10\cdots 10}a^{12}-\frac{60\cdots 74}{53\cdots 05}a^{11}+\frac{62\cdots 69}{21\cdots 42}a^{10}-\frac{83\cdots 37}{10\cdots 10}a^{9}+\frac{22\cdots 27}{10\cdots 10}a^{8}-\frac{40\cdots 17}{10\cdots 10}a^{7}+\frac{87\cdots 67}{21\cdots 20}a^{6}-\frac{72\cdots 27}{43\cdots 84}a^{5}-\frac{18\cdots 37}{43\cdots 84}a^{4}-\frac{96\cdots 31}{21\cdots 20}a^{3}+\frac{24\cdots 63}{21\cdots 20}a^{2}-\frac{10\cdots 31}{21\cdots 20}a+\frac{15\cdots 21}{10\cdots 10}$, $\frac{35\cdots 01}{32\cdots 00}a^{19}+\frac{11\cdots 42}{80\cdots 75}a^{18}-\frac{93\cdots 69}{80\cdots 75}a^{17}-\frac{25\cdots 13}{53\cdots 50}a^{16}+\frac{12\cdots 69}{80\cdots 75}a^{15}+\frac{54\cdots 36}{32\cdots 63}a^{14}-\frac{22\cdots 17}{43\cdots 84}a^{13}-\frac{92\cdots 51}{53\cdots 05}a^{12}+\frac{19\cdots 48}{16\cdots 15}a^{11}-\frac{11\cdots 39}{64\cdots 26}a^{10}+\frac{15\cdots 03}{10\cdots 10}a^{9}-\frac{65\cdots 53}{10\cdots 10}a^{8}+\frac{12\cdots 83}{64\cdots 60}a^{7}+\frac{27\cdots 81}{10\cdots 10}a^{6}-\frac{55\cdots 10}{32\cdots 63}a^{5}+\frac{30\cdots 61}{10\cdots 21}a^{4}-\frac{15\cdots 23}{10\cdots 10}a^{3}-\frac{74\cdots 53}{32\cdots 30}a^{2}-\frac{59\cdots 53}{64\cdots 60}a+\frac{31\cdots 73}{32\cdots 30}$ 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:  \( 93637547912100 \) (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:  \( 4 \) (assuming GRH)

Class number formula

\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{4}\cdot(2\pi)^{8}\cdot 93637547912100 \cdot 1}{2\cdot\sqrt{24264439127689134080000000000000000000000}}\cr\approx \mathstrut & 11.6813715459254 \end{aligned}\] (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 - 5*x^19 - 25*x^18 + 35*x^17 + 1000*x^16 - 2478*x^15 - 12250*x^14 + 74190*x^13 - 130285*x^12 + 136445*x^11 - 388435*x^10 + 970665*x^9 + 1784260*x^8 - 11407390*x^7 + 21264310*x^6 - 16392250*x^5 - 5760615*x^4 - 4392785*x^3 + 55965075*x^2 - 26870825*x + 8792410) 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 - 5*x^19 - 25*x^18 + 35*x^17 + 1000*x^16 - 2478*x^15 - 12250*x^14 + 74190*x^13 - 130285*x^12 + 136445*x^11 - 388435*x^10 + 970665*x^9 + 1784260*x^8 - 11407390*x^7 + 21264310*x^6 - 16392250*x^5 - 5760615*x^4 - 4392785*x^3 + 55965075*x^2 - 26870825*x + 8792410, 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 - 5*x^19 - 25*x^18 + 35*x^17 + 1000*x^16 - 2478*x^15 - 12250*x^14 + 74190*x^13 - 130285*x^12 + 136445*x^11 - 388435*x^10 + 970665*x^9 + 1784260*x^8 - 11407390*x^7 + 21264310*x^6 - 16392250*x^5 - 5760615*x^4 - 4392785*x^3 + 55965075*x^2 - 26870825*x + 8792410); 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 - 5*x^19 - 25*x^18 + 35*x^17 + 1000*x^16 - 2478*x^15 - 12250*x^14 + 74190*x^13 - 130285*x^12 + 136445*x^11 - 388435*x^10 + 970665*x^9 + 1784260*x^8 - 11407390*x^7 + 21264310*x^6 - 16392250*x^5 - 5760615*x^4 - 4392785*x^3 + 55965075*x^2 - 26870825*x + 8792410); 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

$C_2^8.(S_3\times F_5)$ (as 20T559):

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 30720
The 37 conjugacy class representatives for $C_2^8.(S_3\times F_5)$
Character table for $C_2^8.(S_3\times F_5)$

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 32 sibling: 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 ${\href{/padicField/3.8.0.1}{8} }^{2}{,}\,{\href{/padicField/3.2.0.1}{2} }{,}\,{\href{/padicField/3.1.0.1}{1} }^{2}$ R R ${\href{/padicField/11.4.0.1}{4} }^{4}{,}\,{\href{/padicField/11.2.0.1}{2} }{,}\,{\href{/padicField/11.1.0.1}{1} }^{2}$ ${\href{/padicField/13.8.0.1}{8} }^{2}{,}\,{\href{/padicField/13.4.0.1}{4} }$ ${\href{/padicField/17.12.0.1}{12} }{,}\,{\href{/padicField/17.4.0.1}{4} }{,}\,{\href{/padicField/17.3.0.1}{3} }{,}\,{\href{/padicField/17.1.0.1}{1} }$ ${\href{/padicField/19.10.0.1}{10} }{,}\,{\href{/padicField/19.5.0.1}{5} }^{2}$ ${\href{/padicField/23.12.0.1}{12} }{,}\,{\href{/padicField/23.4.0.1}{4} }{,}\,{\href{/padicField/23.3.0.1}{3} }{,}\,{\href{/padicField/23.1.0.1}{1} }$ ${\href{/padicField/29.10.0.1}{10} }{,}\,{\href{/padicField/29.5.0.1}{5} }^{2}$ $15{,}\,{\href{/padicField/31.5.0.1}{5} }$ ${\href{/padicField/37.8.0.1}{8} }^{2}{,}\,{\href{/padicField/37.2.0.1}{2} }{,}\,{\href{/padicField/37.1.0.1}{1} }^{2}$ $15{,}\,{\href{/padicField/41.5.0.1}{5} }$ ${\href{/padicField/43.8.0.1}{8} }^{2}{,}\,{\href{/padicField/43.4.0.1}{4} }$ ${\href{/padicField/47.12.0.1}{12} }{,}\,{\href{/padicField/47.4.0.1}{4} }{,}\,{\href{/padicField/47.3.0.1}{3} }{,}\,{\href{/padicField/47.1.0.1}{1} }$ ${\href{/padicField/53.4.0.1}{4} }^{4}{,}\,{\href{/padicField/53.2.0.1}{2} }{,}\,{\href{/padicField/53.1.0.1}{1} }^{2}$ ${\href{/padicField/59.10.0.1}{10} }{,}\,{\href{/padicField/59.5.0.1}{5} }^{2}$

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

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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 $\Q_{2}$$x + 1$$1$$1$$0$Trivial$$[\ ]$$
$\Q_{2}$$x + 1$$1$$1$$0$Trivial$$[\ ]$$
2.1.2.3a1.3$x^{2} + 4 x + 2$$2$$1$$3$$C_2$$$[3]$$
2.2.8.52c1.71$x^{16} + 8 x^{15} + 44 x^{14} + 168 x^{13} + 494 x^{12} + 1152 x^{11} + 2196 x^{10} + 3464 x^{9} + 4563 x^{8} + 5024 x^{7} + 4620 x^{6} + 3520 x^{5} + 2202 x^{4} + 1104 x^{3} + 440 x^{2} + 136 x + 31$$8$$2$$52$16T863$$[2, 2, 2, 3, \frac{7}{2}, \frac{7}{2}, 4]^{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$$$[\frac{5}{4}]_{12}^{2}$$
\(7\) Copy content Toggle raw display $\Q_{7}$$x + 4$$1$$1$$0$Trivial$$[\ ]$$
7.1.3.2a1.3$x^{3} + 21$$3$$1$$2$$C_3$$$[\ ]_{3}$$
7.4.1.0a1.1$x^{4} + 5 x^{2} + 4 x + 3$$1$$4$$0$$C_4$$$[\ ]^{4}$$
7.4.3.8a1.2$x^{12} + 15 x^{10} + 12 x^{9} + 84 x^{8} + 120 x^{7} + 263 x^{6} + 372 x^{5} + 492 x^{4} + 424 x^{3} + 279 x^{2} + 115 x + 27$$3$$4$$8$$C_{12}$$$[\ ]_{3}^{4}$$

Spectrum of ring of integers

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