↑

Properties

Label 10.0.26436245913...1387.1
Degree $10$
Signature $[0, 5]$
Discriminant $-\,11^{9}\cdot 257^{5}$
Root discriminant $138.75$
Ramified primes $11, 257$
Class number $146728$ (GRH)
Class group $[146728]$ (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![12754272961, -943112897, 943112897, -20366017, 20366017, -180929, 180929, -705, 705, -1, 1]);
 
sage: x = polygen(QQ); K.<a> = NumberField(x^10 - x^9 + 705*x^8 - 705*x^7 + 180929*x^6 - 180929*x^5 + 20366017*x^4 - 20366017*x^3 + 943112897*x^2 - 943112897*x + 12754272961)
 
gp: K = bnfinit(x^10 - x^9 + 705*x^8 - 705*x^7 + 180929*x^6 - 180929*x^5 + 20366017*x^4 - 20366017*x^3 + 943112897*x^2 - 943112897*x + 12754272961, 1)
 

Normalized defining polynomial

\( x^{10} - x^{9} + 705 x^{8} - 705 x^{7} + 180929 x^{6} - 180929 x^{5} + 20366017 x^{4} - 20366017 x^{3} + 943112897 x^{2} - 943112897 x + 12754272961 \)

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:  \(-2643624591337105081387=-\,11^{9}\cdot 257^{5}\)
magma: Discriminant(Integers(K));
 
sage: K.disc()
 
gp: K.disc
 
Root discriminant:  $138.75$
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:  $11, 257$
magma: PrimeDivisors(Discriminant(Integers(K)));
 
sage: K.disc().support()
 
gp: factor(abs(K.disc))[,1]~
 
This field is Galois and abelian over $\Q$.
Conductor:  \(2827=11\cdot 257\)
Dirichlet character group:    $\lbrace$$\chi_{2827}(1,·)$, $\chi_{2827}(258,·)$, $\chi_{2827}(515,·)$, $\chi_{2827}(1284,·)$, $\chi_{2827}(1543,·)$, $\chi_{2827}(2312,·)$, $\chi_{2827}(2569,·)$, $\chi_{2827}(2314,·)$, $\chi_{2827}(513,·)$, $\chi_{2827}(2826,·)$$\rbrace$
This is a CM field.

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

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $\frac{1}{1334690369} a^{6} - \frac{103625998}{1334690369} a^{5} + \frac{384}{1334690369} a^{4} + \frac{206939865}{1334690369} a^{3} + \frac{36864}{1334690369} a^{2} - \frac{102752330}{1334690369} a + \frac{524288}{1334690369}$, $\frac{1}{1334690369} a^{7} + \frac{448}{1334690369} a^{5} - \frac{41387973}{1334690369} a^{4} + \frac{57344}{1334690369} a^{3} + \frac{82201864}{1334690369} a^{2} + \frac{1835008}{1334690369} a - \frac{38921090}{1334690369}$, $\frac{1}{1334690369} a^{8} - \frac{331103784}{1334690369} a^{5} - \frac{114688}{1334690369} a^{4} - \frac{533222195}{1334690369} a^{3} - \frac{14680064}{1334690369} a^{2} + \frac{614650204}{1334690369} a - \frac{234881024}{1334690369}$, $\frac{1}{1334690369} a^{9} - \frac{147456}{1334690369} a^{5} - \frac{184954194}{1334690369} a^{4} - \frac{25165824}{1334690369} a^{3} - \frac{653571294}{1334690369} a^{2} + \frac{428720705}{1334690369} a - \frac{92757455}{1334690369}$

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

Class group and class number

$C_{146728}$, which has order $146728$ (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

\(\Q(\sqrt{-2827}) \), \(\Q(\zeta_{11})^+\)

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 ${\href{/LocalNumberField/2.10.0.1}{10} }$ ${\href{/LocalNumberField/3.10.0.1}{10} }$ ${\href{/LocalNumberField/5.10.0.1}{10} }$ ${\href{/LocalNumberField/7.5.0.1}{5} }^{2}$ R ${\href{/LocalNumberField/13.10.0.1}{10} }$ ${\href{/LocalNumberField/17.10.0.1}{10} }$ ${\href{/LocalNumberField/19.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/23.1.0.1}{1} }^{10}$ ${\href{/LocalNumberField/29.10.0.1}{10} }$ ${\href{/LocalNumberField/31.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/37.10.0.1}{10} }$ ${\href{/LocalNumberField/41.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/43.1.0.1}{1} }^{10}$ ${\href{/LocalNumberField/47.10.0.1}{10} }$ ${\href{/LocalNumberField/53.10.0.1}{10} }$ ${\href{/LocalNumberField/59.5.0.1}{5} }^{2}$

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

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
$11$11.10.9.7$x^{10} + 2673$$10$$1$$9$$C_{10}$$[\ ]_{10}$
257Data not computed