↑

Properties

Label 10.0.51153610020...5719.3
Degree $10$
Signature $[0, 5]$
Discriminant $-\,7^{5}\cdot 11^{8}\cdot 17^{5}$
Root discriminant $74.28$
Ramified primes $7, 11, 17$
Class number $3550$ (GRH)
Class group $[3550]$ (GRH)
Galois group $C_{10}$ (as 10T1)

Related objects

Downloads

Learn more about

Show commands for: Magma / SageMath / Pari/GP

magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(R![31306529, -2590985, 4538792, -317253, 275214, -15220, 8710, -340, 144, -3, 1]);
 
sage: x = polygen(QQ); K.<a> = NumberField(x^10 - 3*x^9 + 144*x^8 - 340*x^7 + 8710*x^6 - 15220*x^5 + 275214*x^4 - 317253*x^3 + 4538792*x^2 - 2590985*x + 31306529)
 
gp: K = bnfinit(x^10 - 3*x^9 + 144*x^8 - 340*x^7 + 8710*x^6 - 15220*x^5 + 275214*x^4 - 317253*x^3 + 4538792*x^2 - 2590985*x + 31306529, 1)
 

Normalized defining polynomial

\( x^{10} - 3 x^{9} + 144 x^{8} - 340 x^{7} + 8710 x^{6} - 15220 x^{5} + 275214 x^{4} - 317253 x^{3} + 4538792 x^{2} - 2590985 x + 31306529 \)

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

Invariants

Degree:  $10$
magma: Degree(K);
 
sage: K.degree()
 
gp: poldegree(K.pol)
 
Signature:  $[0, 5]$
magma: Signature(K);
 
sage: K.signature()
 
gp: K.sign
 
Discriminant:  \(-5115361002064185719=-\,7^{5}\cdot 11^{8}\cdot 17^{5}\)
magma: Discriminant(Integers(K));
 
sage: K.disc()
 
gp: K.disc
 
Root discriminant:  $74.28$
magma: Abs(Discriminant(Integers(K)))^(1/Degree(K));
 
sage: (K.disc().abs())^(1./K.degree())
 
gp: abs(K.disc)^(1/poldegree(K.pol))
 
Ramified primes:  $7, 11, 17$
magma: PrimeDivisors(Discriminant(Integers(K)));
 
sage: K.disc().support()
 
gp: factor(abs(K.disc))[,1]~
 
This field is Galois and abelian over $\Q$.
Conductor:  \(1309=7\cdot 11\cdot 17\)
Dirichlet character group:    $\lbrace$$\chi_{1309}(1,·)$, $\chi_{1309}(834,·)$, $\chi_{1309}(356,·)$, $\chi_{1309}(1189,·)$, $\chi_{1309}(1191,·)$, $\chi_{1309}(713,·)$, $\chi_{1309}(1070,·)$, $\chi_{1309}(1072,·)$, $\chi_{1309}(951,·)$, $\chi_{1309}(477,·)$$\rbrace$
This is a CM field.

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

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $\frac{1}{814579459667212447583} a^{9} - \frac{169497499482672718418}{814579459667212447583} a^{8} + \frac{169282452312681362178}{814579459667212447583} a^{7} - \frac{191538182485388428731}{814579459667212447583} a^{6} + \frac{136079267736768836424}{814579459667212447583} a^{5} - \frac{66439986262330024384}{814579459667212447583} a^{4} - \frac{140747548212551722756}{814579459667212447583} a^{3} - \frac{98313774435008469467}{814579459667212447583} a^{2} + \frac{221429749132065869970}{814579459667212447583} a + \frac{83844982753374112336}{814579459667212447583}$

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

Class group and class number

$C_{3550}$, which has order $3550$ (assuming GRH)

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

Unit group

magma: UK, f := UnitGroup(K);
 
sage: UK = K.unit_group()
 
Rank:  $4$
magma: UnitRank(K);
 
sage: UK.rank()
 
gp: K.fu
 
Torsion generator:  \( -1 \) (order $2$)
magma: K!f(TU.1) where TU,f is TorsionUnitGroup(K);
 
sage: UK.torsion_generator()
 
gp: K.tu[2]
 
Fundamental units:  Units are too long to display, but can be downloaded with other data for this field from 'Stored data to gp' link to the right (assuming GRH)
magma: [K!f(g): g in Generators(UK)];
 
sage: UK.fundamental_units()
 
gp: K.fu
 
Regulator:  \( 26.1711060094 \) (assuming GRH)
magma: Regulator(K);
 
sage: K.regulator()
 
gp: K.reg
 

Galois group

$C_{10}$ (as 10T1):

magma: GaloisGroup(K);
 
sage: K.galois_group(type='pari')
 
gp: polgalois(K.pol)
 
A cyclic group of order 10
The 10 conjugacy class representatives for $C_{10}$
Character table for $C_{10}$

Intermediate fields

\(\Q(\sqrt{-119}) \), \(\Q(\zeta_{11})^+\)

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

Frobenius cycle types

$p$ 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59
Cycle type ${\href{/LocalNumberField/2.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/3.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/5.5.0.1}{5} }^{2}$ R R ${\href{/LocalNumberField/13.10.0.1}{10} }$ R ${\href{/LocalNumberField/19.10.0.1}{10} }$ ${\href{/LocalNumberField/23.2.0.1}{2} }^{5}$ ${\href{/LocalNumberField/29.10.0.1}{10} }$ ${\href{/LocalNumberField/31.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/37.10.0.1}{10} }$ ${\href{/LocalNumberField/41.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/43.1.0.1}{1} }^{10}$ ${\href{/LocalNumberField/47.10.0.1}{10} }$ ${\href{/LocalNumberField/53.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/59.10.0.1}{10} }$

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

magma: p := 7; // to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$:
 
magma: idealfactors := Factorization(p*Integers(K)); // get the data
 
magma: [<primefactor[2], Valuation(Norm(primefactor[1]), p)> : primefactor in idealfactors];
 
sage: p = 7; # to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$:
 
sage: [(e, pr.norm().valuation(p)) for pr,e in K.factor(p)]
 
gp: p = 7; \\ to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$:
 
gp: idealfactors = idealprimedec(K, p); \\ get the data
 
gp: vector(length(idealfactors), j, [idealfactors[j][3], idealfactors[j][4]])
 

Local algebras for ramified primes

$p$LabelPolynomial $e$ $f$ $c$ Galois group Slope content
$7$7.10.5.1$x^{10} - 98 x^{6} + 2401 x^{2} - 268912$$2$$5$$5$$C_{10}$$[\ ]_{2}^{5}$
$11$11.10.8.5$x^{10} - 2321 x^{5} + 2033647$$5$$2$$8$$C_{10}$$[\ ]_{5}^{2}$
$17$17.10.5.2$x^{10} - 83521 x^{2} + 8519142$$2$$5$$5$$C_{10}$$[\ ]_{2}^{5}$