Properties

Label 38.38.206...109.1
Degree $38$
Signature $[38, 0]$
Discriminant $2.060\times 10^{87}$
Root discriminant \(198.49\)
Ramified prime $229$
Class number not computed
Class group not computed
Galois group $C_{38}$ (as 38T1)

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Normalized defining polynomial

sage: x = polygen(QQ); K.<a> = NumberField(x^38 - x^37 - 111*x^36 + 252*x^35 + 5215*x^34 - 18518*x^33 - 127217*x^32 + 667591*x^31 + 1483161*x^30 - 13721975*x^29 + 465004*x^28 + 166721208*x^27 - 256518740*x^26 - 1121099509*x^25 + 3587854285*x^24 + 2545487107*x^23 - 24194172078*x^22 + 18477975516*x^21 + 81929300895*x^20 - 167013913064*x^19 - 73340427022*x^18 + 542830510766*x^17 - 389253844535*x^16 - 713755295161*x^15 + 1324741808499*x^14 - 116683382685*x^13 - 1503618080692*x^12 + 1234820609168*x^11 + 402888989840*x^10 - 1097103201368*x^9 + 414161581992*x^8 + 265775405099*x^7 - 274544542564*x^6 + 51663795877*x^5 + 34067812864*x^4 - 20708103251*x^3 + 4233902513*x^2 - 281738990*x - 6131569)
 
gp: K = bnfinit(y^38 - y^37 - 111*y^36 + 252*y^35 + 5215*y^34 - 18518*y^33 - 127217*y^32 + 667591*y^31 + 1483161*y^30 - 13721975*y^29 + 465004*y^28 + 166721208*y^27 - 256518740*y^26 - 1121099509*y^25 + 3587854285*y^24 + 2545487107*y^23 - 24194172078*y^22 + 18477975516*y^21 + 81929300895*y^20 - 167013913064*y^19 - 73340427022*y^18 + 542830510766*y^17 - 389253844535*y^16 - 713755295161*y^15 + 1324741808499*y^14 - 116683382685*y^13 - 1503618080692*y^12 + 1234820609168*y^11 + 402888989840*y^10 - 1097103201368*y^9 + 414161581992*y^8 + 265775405099*y^7 - 274544542564*y^6 + 51663795877*y^5 + 34067812864*y^4 - 20708103251*y^3 + 4233902513*y^2 - 281738990*y - 6131569, 1)
 
magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^38 - x^37 - 111*x^36 + 252*x^35 + 5215*x^34 - 18518*x^33 - 127217*x^32 + 667591*x^31 + 1483161*x^30 - 13721975*x^29 + 465004*x^28 + 166721208*x^27 - 256518740*x^26 - 1121099509*x^25 + 3587854285*x^24 + 2545487107*x^23 - 24194172078*x^22 + 18477975516*x^21 + 81929300895*x^20 - 167013913064*x^19 - 73340427022*x^18 + 542830510766*x^17 - 389253844535*x^16 - 713755295161*x^15 + 1324741808499*x^14 - 116683382685*x^13 - 1503618080692*x^12 + 1234820609168*x^11 + 402888989840*x^10 - 1097103201368*x^9 + 414161581992*x^8 + 265775405099*x^7 - 274544542564*x^6 + 51663795877*x^5 + 34067812864*x^4 - 20708103251*x^3 + 4233902513*x^2 - 281738990*x - 6131569);
 
oscar: Qx, x = PolynomialRing(QQ); K, a = NumberField(x^38 - x^37 - 111*x^36 + 252*x^35 + 5215*x^34 - 18518*x^33 - 127217*x^32 + 667591*x^31 + 1483161*x^30 - 13721975*x^29 + 465004*x^28 + 166721208*x^27 - 256518740*x^26 - 1121099509*x^25 + 3587854285*x^24 + 2545487107*x^23 - 24194172078*x^22 + 18477975516*x^21 + 81929300895*x^20 - 167013913064*x^19 - 73340427022*x^18 + 542830510766*x^17 - 389253844535*x^16 - 713755295161*x^15 + 1324741808499*x^14 - 116683382685*x^13 - 1503618080692*x^12 + 1234820609168*x^11 + 402888989840*x^10 - 1097103201368*x^9 + 414161581992*x^8 + 265775405099*x^7 - 274544542564*x^6 + 51663795877*x^5 + 34067812864*x^4 - 20708103251*x^3 + 4233902513*x^2 - 281738990*x - 6131569)
 

\( x^{38} - x^{37} - 111 x^{36} + 252 x^{35} + 5215 x^{34} - 18518 x^{33} - 127217 x^{32} + 667591 x^{31} + \cdots - 6131569 \) Copy content Toggle raw display

sage: K.defining_polynomial()
 
gp: K.pol
 
magma: DefiningPolynomial(K);
 
oscar: defining_polynomial(K)
 

Invariants

Degree:  $38$
sage: K.degree()
 
gp: poldegree(K.pol)
 
magma: Degree(K);
 
oscar: degree(K)
 
Signature:  $[38, 0]$
sage: K.signature()
 
gp: K.sign
 
magma: Signature(K);
 
oscar: signature(K)
 
Discriminant:   \(206\!\cdots\!109\) \(\medspace = 229^{37}\) Copy content Toggle raw display
sage: K.disc()
 
gp: K.disc
 
magma: OK := Integers(K); Discriminant(OK);
 
oscar: OK = ring_of_integers(K); discriminant(OK)
 
Root discriminant:  \(198.49\)
sage: (K.disc().abs())^(1./K.degree())
 
gp: abs(K.disc)^(1/poldegree(K.pol))
 
magma: Abs(Discriminant(OK))^(1/Degree(K));
 
oscar: (1.0 * dK)^(1/degree(K))
 
Galois root discriminant:  $229^{37/38}\approx 198.48813385059066$
Ramified primes:   \(229\) Copy content Toggle raw display
sage: K.disc().support()
 
gp: factor(abs(K.disc))[,1]~
 
magma: PrimeDivisors(Discriminant(OK));
 
oscar: prime_divisors(discriminant((OK)))
 
Discriminant root field:  \(\Q(\sqrt{229}) \)
$\card{ \Gal(K/\Q) }$:  $38$
sage: K.automorphisms()
 
magma: Automorphisms(K);
 
oscar: automorphisms(K)
 
This field is Galois and abelian over $\Q$.
Conductor:  \(229\)
Dirichlet character group:    $\lbrace$$\chi_{229}(1,·)$, $\chi_{229}(4,·)$, $\chi_{229}(44,·)$, $\chi_{229}(11,·)$, $\chi_{229}(15,·)$, $\chi_{229}(16,·)$, $\chi_{229}(17,·)$, $\chi_{229}(26,·)$, $\chi_{229}(27,·)$, $\chi_{229}(161,·)$, $\chi_{229}(165,·)$, $\chi_{229}(168,·)$, $\chi_{229}(169,·)$, $\chi_{229}(42,·)$, $\chi_{229}(43,·)$, $\chi_{229}(172,·)$, $\chi_{229}(176,·)$, $\chi_{229}(53,·)$, $\chi_{229}(57,·)$, $\chi_{229}(186,·)$, $\chi_{229}(187,·)$, $\chi_{229}(60,·)$, $\chi_{229}(61,·)$, $\chi_{229}(64,·)$, $\chi_{229}(68,·)$, $\chi_{229}(202,·)$, $\chi_{229}(203,·)$, $\chi_{229}(212,·)$, $\chi_{229}(213,·)$, $\chi_{229}(214,·)$, $\chi_{229}(185,·)$, $\chi_{229}(218,·)$, $\chi_{229}(225,·)$, $\chi_{229}(228,·)$, $\chi_{229}(104,·)$, $\chi_{229}(108,·)$, $\chi_{229}(121,·)$, $\chi_{229}(125,·)$$\rbrace$
This is not a CM field.

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

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $a^{9}$, $a^{10}$, $a^{11}$, $a^{12}$, $a^{13}$, $a^{14}$, $a^{15}$, $a^{16}$, $a^{17}$, $a^{18}$, $a^{19}$, $a^{20}$, $a^{21}$, $a^{22}$, $a^{23}$, $a^{24}$, $a^{25}$, $a^{26}$, $a^{27}$, $a^{28}$, $a^{29}$, $a^{30}$, $a^{31}$, $a^{32}$, $a^{33}$, $a^{34}$, $a^{35}$, $\frac{1}{7787737}a^{36}-\frac{2637475}{7787737}a^{35}+\frac{615065}{7787737}a^{34}-\frac{2506933}{7787737}a^{33}+\frac{1207515}{7787737}a^{32}+\frac{119873}{7787737}a^{31}+\frac{1574909}{7787737}a^{30}+\frac{3751364}{7787737}a^{29}-\frac{755682}{7787737}a^{28}+\frac{3174239}{7787737}a^{27}-\frac{96975}{7787737}a^{26}+\frac{913786}{7787737}a^{25}-\frac{3040176}{7787737}a^{24}-\frac{1682192}{7787737}a^{23}-\frac{1864227}{7787737}a^{22}-\frac{3799130}{7787737}a^{21}+\frac{1276549}{7787737}a^{20}+\frac{62153}{7787737}a^{19}-\frac{2536689}{7787737}a^{18}+\frac{2163242}{7787737}a^{17}-\frac{945908}{7787737}a^{16}+\frac{2582888}{7787737}a^{15}-\frac{2012910}{7787737}a^{14}-\frac{1100709}{7787737}a^{13}+\frac{1058155}{7787737}a^{12}+\frac{1861100}{7787737}a^{11}-\frac{37384}{7787737}a^{10}-\frac{3344653}{7787737}a^{9}+\frac{205591}{7787737}a^{8}-\frac{727001}{7787737}a^{7}-\frac{3708005}{7787737}a^{6}+\frac{2492503}{7787737}a^{5}+\frac{1487749}{7787737}a^{4}-\frac{1386641}{7787737}a^{3}-\frac{567980}{7787737}a^{2}-\frac{2451025}{7787737}a-\frac{3398}{17041}$, $\frac{1}{47\!\cdots\!31}a^{37}-\frac{63\!\cdots\!55}{47\!\cdots\!31}a^{36}+\frac{12\!\cdots\!53}{47\!\cdots\!31}a^{35}+\frac{16\!\cdots\!33}{47\!\cdots\!31}a^{34}+\frac{83\!\cdots\!92}{47\!\cdots\!31}a^{33}+\frac{15\!\cdots\!28}{47\!\cdots\!31}a^{32}+\frac{21\!\cdots\!91}{47\!\cdots\!31}a^{31}+\frac{12\!\cdots\!93}{47\!\cdots\!31}a^{30}-\frac{14\!\cdots\!17}{47\!\cdots\!31}a^{29}-\frac{11\!\cdots\!28}{47\!\cdots\!31}a^{28}+\frac{18\!\cdots\!84}{47\!\cdots\!31}a^{27}+\frac{12\!\cdots\!86}{47\!\cdots\!31}a^{26}+\frac{20\!\cdots\!89}{47\!\cdots\!31}a^{25}+\frac{31\!\cdots\!58}{47\!\cdots\!31}a^{24}-\frac{55\!\cdots\!39}{47\!\cdots\!31}a^{23}+\frac{20\!\cdots\!60}{47\!\cdots\!31}a^{22}-\frac{17\!\cdots\!90}{47\!\cdots\!31}a^{21}-\frac{15\!\cdots\!77}{47\!\cdots\!31}a^{20}-\frac{22\!\cdots\!85}{47\!\cdots\!31}a^{19}-\frac{13\!\cdots\!35}{47\!\cdots\!31}a^{18}+\frac{49\!\cdots\!11}{47\!\cdots\!31}a^{17}+\frac{12\!\cdots\!61}{47\!\cdots\!31}a^{16}-\frac{39\!\cdots\!76}{47\!\cdots\!31}a^{15}+\frac{45\!\cdots\!41}{47\!\cdots\!31}a^{14}+\frac{13\!\cdots\!35}{47\!\cdots\!31}a^{13}+\frac{23\!\cdots\!35}{47\!\cdots\!31}a^{12}-\frac{16\!\cdots\!90}{47\!\cdots\!31}a^{11}+\frac{14\!\cdots\!36}{47\!\cdots\!31}a^{10}+\frac{49\!\cdots\!76}{47\!\cdots\!31}a^{9}+\frac{18\!\cdots\!06}{47\!\cdots\!31}a^{8}-\frac{13\!\cdots\!96}{47\!\cdots\!31}a^{7}-\frac{47\!\cdots\!00}{47\!\cdots\!31}a^{6}+\frac{23\!\cdots\!02}{47\!\cdots\!31}a^{5}-\frac{18\!\cdots\!16}{47\!\cdots\!31}a^{4}+\frac{88\!\cdots\!05}{47\!\cdots\!31}a^{3}-\frac{12\!\cdots\!21}{47\!\cdots\!31}a^{2}+\frac{77\!\cdots\!83}{47\!\cdots\!31}a+\frac{18\!\cdots\!44}{10\!\cdots\!83}$ Copy content Toggle raw display

sage: K.integral_basis()
 
gp: K.zk
 
magma: IntegralBasis(K);
 
oscar: basis(OK)
 

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

Class group and class number

not computed

sage: K.class_group().invariants()
 
gp: K.clgp
 
magma: ClassGroup(K);
 
oscar: class_group(K)
 

Unit group

sage: UK = K.unit_group()
 
magma: UK, fUK := UnitGroup(K);
 
oscar: UK, fUK = unit_group(OK)
 
Rank:  $37$
sage: UK.rank()
 
gp: K.fu
 
magma: UnitRank(K);
 
oscar: rank(UK)
 
Torsion generator:   \( -1 \)  (order $2$) Copy content Toggle raw display
sage: UK.torsion_generator()
 
gp: K.tu[2]
 
magma: K!f(TU.1) where TU,f is TorsionUnitGroup(K);
 
oscar: torsion_units_generator(OK)
 
Fundamental units:  not computed
sage: UK.fundamental_units()
 
gp: K.fu
 
magma: [K|fUK(g): g in Generators(UK)];
 
oscar: [K(fUK(a)) for a in gens(UK)]
 
Regulator:  not computed
sage: K.regulator()
 
gp: K.reg
 
magma: Regulator(K);
 
oscar: regulator(K)
 

Class number formula

\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr $ not computed \end{aligned}\]

# self-contained SageMath code snippet to compute the analytic class number formula
 
x = polygen(QQ); K.<a> = NumberField(x^38 - x^37 - 111*x^36 + 252*x^35 + 5215*x^34 - 18518*x^33 - 127217*x^32 + 667591*x^31 + 1483161*x^30 - 13721975*x^29 + 465004*x^28 + 166721208*x^27 - 256518740*x^26 - 1121099509*x^25 + 3587854285*x^24 + 2545487107*x^23 - 24194172078*x^22 + 18477975516*x^21 + 81929300895*x^20 - 167013913064*x^19 - 73340427022*x^18 + 542830510766*x^17 - 389253844535*x^16 - 713755295161*x^15 + 1324741808499*x^14 - 116683382685*x^13 - 1503618080692*x^12 + 1234820609168*x^11 + 402888989840*x^10 - 1097103201368*x^9 + 414161581992*x^8 + 265775405099*x^7 - 274544542564*x^6 + 51663795877*x^5 + 34067812864*x^4 - 20708103251*x^3 + 4233902513*x^2 - 281738990*x - 6131569)
 
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))))
 
# self-contained Pari/GP code snippet to compute the analytic class number formula
 
K = bnfinit(x^38 - x^37 - 111*x^36 + 252*x^35 + 5215*x^34 - 18518*x^33 - 127217*x^32 + 667591*x^31 + 1483161*x^30 - 13721975*x^29 + 465004*x^28 + 166721208*x^27 - 256518740*x^26 - 1121099509*x^25 + 3587854285*x^24 + 2545487107*x^23 - 24194172078*x^22 + 18477975516*x^21 + 81929300895*x^20 - 167013913064*x^19 - 73340427022*x^18 + 542830510766*x^17 - 389253844535*x^16 - 713755295161*x^15 + 1324741808499*x^14 - 116683382685*x^13 - 1503618080692*x^12 + 1234820609168*x^11 + 402888989840*x^10 - 1097103201368*x^9 + 414161581992*x^8 + 265775405099*x^7 - 274544542564*x^6 + 51663795877*x^5 + 34067812864*x^4 - 20708103251*x^3 + 4233902513*x^2 - 281738990*x - 6131569, 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)))]
 
/* self-contained Magma code snippet to compute the analytic class number formula */
 
Qx<x> := PolynomialRing(QQ); K<a> := NumberField(x^38 - x^37 - 111*x^36 + 252*x^35 + 5215*x^34 - 18518*x^33 - 127217*x^32 + 667591*x^31 + 1483161*x^30 - 13721975*x^29 + 465004*x^28 + 166721208*x^27 - 256518740*x^26 - 1121099509*x^25 + 3587854285*x^24 + 2545487107*x^23 - 24194172078*x^22 + 18477975516*x^21 + 81929300895*x^20 - 167013913064*x^19 - 73340427022*x^18 + 542830510766*x^17 - 389253844535*x^16 - 713755295161*x^15 + 1324741808499*x^14 - 116683382685*x^13 - 1503618080692*x^12 + 1234820609168*x^11 + 402888989840*x^10 - 1097103201368*x^9 + 414161581992*x^8 + 265775405099*x^7 - 274544542564*x^6 + 51663795877*x^5 + 34067812864*x^4 - 20708103251*x^3 + 4233902513*x^2 - 281738990*x - 6131569);
 
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)));
 
# self-contained Oscar code snippet to compute the analytic class number formula
 
Qx, x = PolynomialRing(QQ); K, a = NumberField(x^38 - x^37 - 111*x^36 + 252*x^35 + 5215*x^34 - 18518*x^33 - 127217*x^32 + 667591*x^31 + 1483161*x^30 - 13721975*x^29 + 465004*x^28 + 166721208*x^27 - 256518740*x^26 - 1121099509*x^25 + 3587854285*x^24 + 2545487107*x^23 - 24194172078*x^22 + 18477975516*x^21 + 81929300895*x^20 - 167013913064*x^19 - 73340427022*x^18 + 542830510766*x^17 - 389253844535*x^16 - 713755295161*x^15 + 1324741808499*x^14 - 116683382685*x^13 - 1503618080692*x^12 + 1234820609168*x^11 + 402888989840*x^10 - 1097103201368*x^9 + 414161581992*x^8 + 265775405099*x^7 - 274544542564*x^6 + 51663795877*x^5 + 34067812864*x^4 - 20708103251*x^3 + 4233902513*x^2 - 281738990*x - 6131569);
 
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

$C_{38}$ (as 38T1):

sage: K.galois_group(type='pari')
 
gp: polgalois(K.pol)
 
magma: G = GaloisGroup(K);
 
oscar: G, Gtx = galois_group(K); G, transitive_group_identification(G)
 
A cyclic group of order 38
The 38 conjugacy class representatives for $C_{38}$
Character table for $C_{38}$ is not computed

Intermediate fields

\(\Q(\sqrt{229}) \), 19.19.2999429662895796650415561622892044448017561.1

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

sage: K.subfields()[1:-1]
 
gp: L = nfsubfields(K); L[2..length(b)]
 
magma: L := Subfields(K); L[2..#L];
 
oscar: subfields(K)[2:end-1]
 

Frobenius cycle types

$p$ $2$ $3$ $5$ $7$ $11$ $13$ $17$ $19$ $23$ $29$ $31$ $37$ $41$ $43$ $47$ $53$ $59$
Cycle type $38$ $19^{2}$ $19^{2}$ $38$ $19^{2}$ $38$ $19^{2}$ $19^{2}$ $38$ $38$ $38$ $19^{2}$ $38$ $19^{2}$ $38$ $19^{2}$ $38$

Cycle lengths which are repeated in a cycle type are indicated by exponents.

# to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ for $p=7$ in Sage:
 
p = 7; [(e, pr.norm().valuation(p)) for pr,e in K.factor(p)]
 
\\ to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ for $p=7$ in Pari:
 
p = 7; pfac = idealprimedec(K, p); vector(length(pfac), j, [pfac[j][3], pfac[j][4]])
 
// to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ for $p=7 in Magma:
 
p := 7; [<pr[2], Valuation(Norm(pr[1]), p)> : pr in Factorization(p*Integers(K))];
 
# to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ 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
\(229\) Copy content Toggle raw display Deg $38$$38$$1$$37$