Properties

Label 22.0.439...467.1
Degree $22$
Signature $[0, 11]$
Discriminant $-4.395\times 10^{27}$
Root discriminant $18.05$
Ramified primes $3, 19457, 8095783$
Class number $1$ (GRH)
Class group trivial (GRH)
Galois group 22T47

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Normalized defining polynomial

sage: x = polygen(QQ); K.<a> = NumberField(x^22 - x^21 + 2*x^20 + x^19 + 2*x^18 - x^17 + 4*x^15 - 6*x^14 - 6*x^13 - 3*x^12 - x^11 - 2*x^10 - 8*x^9 + 8*x^8 + 5*x^7 + 7*x^6 + 8*x^5 + 8*x^4 + 6*x^3 + 4*x^2 + 2*x + 1)
 
gp: K = bnfinit(x^22 - x^21 + 2*x^20 + x^19 + 2*x^18 - x^17 + 4*x^15 - 6*x^14 - 6*x^13 - 3*x^12 - x^11 - 2*x^10 - 8*x^9 + 8*x^8 + 5*x^7 + 7*x^6 + 8*x^5 + 8*x^4 + 6*x^3 + 4*x^2 + 2*x + 1, 1)
 
magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(R![1, 2, 4, 6, 8, 8, 7, 5, 8, -8, -2, -1, -3, -6, -6, 4, 0, -1, 2, 1, 2, -1, 1]);
 

\( x^{22} - x^{21} + 2 x^{20} + x^{19} + 2 x^{18} - x^{17} + 4 x^{15} - 6 x^{14} - 6 x^{13} - 3 x^{12} - x^{11} - 2 x^{10} - 8 x^{9} + 8 x^{8} + 5 x^{7} + 7 x^{6} + 8 x^{5} + 8 x^{4} + 6 x^{3} + 4 x^{2} + 2 x + 1 \)

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

Invariants

Degree:  $22$
sage: K.degree()
 
gp: poldegree(K.pol)
 
magma: Degree(K);
 
Signature:  $[0, 11]$
sage: K.signature()
 
gp: K.sign
 
magma: Signature(K);
 
Discriminant:  \(-4395449323362095410329595467\)\(\medspace = -\,3^{11}\cdot 19457^{2}\cdot 8095783^{2}\)
sage: K.disc()
 
gp: K.disc
 
magma: Discriminant(Integers(K));
 
Root discriminant:  $18.05$
sage: (K.disc().abs())^(1./K.degree())
 
gp: abs(K.disc)^(1/poldegree(K.pol))
 
magma: Abs(Discriminant(Integers(K)))^(1/Degree(K));
 
Ramified primes:  $3, 19457, 8095783$
sage: K.disc().support()
 
gp: factor(abs(K.disc))[,1]~
 
magma: PrimeDivisors(Discriminant(Integers(K)));
 
$|\Aut(K/\Q)|$:  $2$
This field is not Galois over $\Q$.
This is not a CM field.

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

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $a^{9}$, $a^{10}$, $a^{11}$, $a^{12}$, $a^{13}$, $a^{14}$, $a^{15}$, $a^{16}$, $a^{17}$, $a^{18}$, $a^{19}$, $a^{20}$, $\frac{1}{3207649} a^{21} + \frac{1593331}{3207649} a^{20} - \frac{1362752}{3207649} a^{19} - \frac{1023881}{3207649} a^{18} - \frac{948931}{3207649} a^{17} - \frac{1487804}{3207649} a^{16} - \frac{844213}{3207649} a^{15} - \frac{17807}{3207649} a^{14} - \frac{807525}{3207649} a^{13} - \frac{48777}{3207649} a^{12} + \frac{172654}{3207649} a^{11} + \frac{749589}{3207649} a^{10} - \frac{1511061}{3207649} a^{9} + \frac{1002352}{3207649} a^{8} + \frac{30553}{139463} a^{7} - \frac{497876}{3207649} a^{6} - \frac{1296284}{3207649} a^{5} + \frac{828118}{3207649} a^{4} + \frac{493034}{3207649} a^{3} + \frac{778598}{3207649} a^{2} + \frac{442492}{3207649} a - \frac{1379205}{3207649}$

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

Class group and class number

Trivial group, which has order $1$ (assuming GRH)

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

Unit group

sage: UK = K.unit_group()
 
magma: UK, f := UnitGroup(K);
 
Rank:  $10$
sage: UK.rank()
 
gp: K.fu
 
magma: UnitRank(K);
 
Torsion generator:  \( -\frac{2168402}{3207649} a^{21} + \frac{2272030}{3207649} a^{20} - \frac{4364211}{3207649} a^{19} - \frac{1477784}{3207649} a^{18} - \frac{4463450}{3207649} a^{17} + \frac{3242127}{3207649} a^{16} + \frac{703922}{3207649} a^{15} - \frac{7359546}{3207649} a^{14} + \frac{12104791}{3207649} a^{13} + \frac{11956824}{3207649} a^{12} + \frac{7097074}{3207649} a^{11} - \frac{1516657}{3207649} a^{10} - \frac{97786}{3207649} a^{9} + \frac{13711492}{3207649} a^{8} - \frac{682786}{139463} a^{7} - \frac{9525076}{3207649} a^{6} - \frac{17246426}{3207649} a^{5} - \frac{12325448}{3207649} a^{4} - \frac{12161160}{3207649} a^{3} - \frac{5901034}{3207649} a^{2} - \frac{6115361}{3207649} a + \frac{89366}{3207649} \) (order $6$)
sage: UK.torsion_generator()
 
gp: K.tu[2]
 
magma: K!f(TU.1) where TU,f is TorsionUnitGroup(K);
 
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)
sage: UK.fundamental_units()
 
gp: K.fu
 
magma: [K!f(g): g in Generators(UK)];
 
Regulator:  \( 136255.877931 \) (assuming GRH)
sage: K.regulator()
 
gp: K.reg
 
magma: Regulator(K);
 

Class number formula

$\displaystyle\lim_{s\to 1} (s-1)\zeta_K(s) \approx\frac{2^{0}\cdot(2\pi)^{11}\cdot 136255.877931 \cdot 1}{6\sqrt{4395449323362095410329595467}}\approx 0.206386320898$ (assuming GRH)

Galois group

22T47:

sage: K.galois_group(type='pari')
 
gp: polgalois(K.pol)
 
magma: GaloisGroup(K);
 
A non-solvable group of order 79833600
The 112 conjugacy class representatives for t22n47 are not computed
Character table for t22n47 is not computed

Intermediate fields

\(\Q(\sqrt{-3}) \), 11.5.157519649831.1

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

Sibling fields

Degree 22 sibling: data not computed
Degree 44 sibling: data not computed

Frobenius cycle types

$p$ $2$ $3$ $5$ $7$ $11$ $13$ $17$ $19$ $23$ $29$ $31$ $37$ $41$ $43$ $47$ $53$ $59$
Cycle type $22$ R $22$ ${\href{/LocalNumberField/7.5.0.1}{5} }^{2}{,}\,{\href{/LocalNumberField/7.4.0.1}{4} }^{2}{,}\,{\href{/LocalNumberField/7.2.0.1}{2} }^{2}$ ${\href{/LocalNumberField/11.8.0.1}{8} }^{2}{,}\,{\href{/LocalNumberField/11.6.0.1}{6} }$ ${\href{/LocalNumberField/13.10.0.1}{10} }^{2}{,}\,{\href{/LocalNumberField/13.1.0.1}{1} }^{2}$ ${\href{/LocalNumberField/17.10.0.1}{10} }{,}\,{\href{/LocalNumberField/17.4.0.1}{4} }^{2}{,}\,{\href{/LocalNumberField/17.2.0.1}{2} }^{2}$ ${\href{/LocalNumberField/19.6.0.1}{6} }^{2}{,}\,{\href{/LocalNumberField/19.5.0.1}{5} }^{2}$ ${\href{/LocalNumberField/23.10.0.1}{10} }{,}\,{\href{/LocalNumberField/23.4.0.1}{4} }^{2}{,}\,{\href{/LocalNumberField/23.2.0.1}{2} }^{2}$ $22$ ${\href{/LocalNumberField/31.10.0.1}{10} }^{2}{,}\,{\href{/LocalNumberField/31.1.0.1}{1} }^{2}$ ${\href{/LocalNumberField/37.9.0.1}{9} }^{2}{,}\,{\href{/LocalNumberField/37.1.0.1}{1} }^{4}$ $22$ ${\href{/LocalNumberField/43.9.0.1}{9} }^{2}{,}\,{\href{/LocalNumberField/43.2.0.1}{2} }^{2}$ $18{,}\,{\href{/LocalNumberField/47.2.0.1}{2} }^{2}$ $18{,}\,{\href{/LocalNumberField/53.2.0.1}{2} }^{2}$ ${\href{/LocalNumberField/59.8.0.1}{8} }^{2}{,}\,{\href{/LocalNumberField/59.2.0.1}{2} }^{3}$

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

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]])
 
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];
 

Local algebras for ramified primes

$p$LabelPolynomial $e$ $f$ $c$ Galois group Slope content
3Data not computed
19457Data not computed
8095783Data not computed