Normalized defining polynomial
\( x^{16} + 27x^{14} + 293x^{12} + 1661x^{10} + 5333x^{8} + 9812x^{6} + 9932x^{4} + 4901x^{2} + 841 \)
Invariants
Degree: | $16$ | sage: K.degree()
gp: poldegree(K.pol)
magma: Degree(K);
oscar: degree(K)
| |
Signature: | $[0, 8]$ | sage: K.signature()
gp: K.sign
magma: Signature(K);
oscar: signature(K)
| |
Discriminant: |
\(18727984661882905600000000\)
\(\medspace = 2^{16}\cdot 5^{8}\cdot 29^{6}\cdot 1109^{2}\)
| sage: K.disc()
gp: K.disc
magma: OK := Integers(K); Discriminant(OK);
oscar: OK = ring_of_integers(K); discriminant(OK)
| |
Root discriminant: | \(37.98\) | 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: | not computed | ||
Ramified primes: |
\(2\), \(5\), \(29\), \(1109\)
| sage: K.disc().support()
gp: factor(abs(K.disc))[,1]~
magma: PrimeDivisors(Discriminant(OK));
oscar: prime_divisors(discriminant((OK)))
| |
Discriminant root field: | \(\Q\) | ||
$\card{ \Aut(K/\Q) }$: | $2$ | sage: K.automorphisms()
magma: Automorphisms(K);
oscar: automorphisms(K)
| |
This field is not Galois over $\Q$. | |||
This is a CM field. | |||
Reflex fields: | unavailable$^{128}$ |
Integral basis (with respect to field generator \(a\))
$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $a^{9}$, $a^{10}$, $a^{11}$, $\frac{1}{7}a^{12}+\frac{2}{7}a^{10}-\frac{1}{7}a^{8}+\frac{1}{7}a^{6}+\frac{1}{7}a^{4}+\frac{2}{7}a^{2}-\frac{1}{7}$, $\frac{1}{7}a^{13}+\frac{2}{7}a^{11}-\frac{1}{7}a^{9}+\frac{1}{7}a^{7}+\frac{1}{7}a^{5}+\frac{2}{7}a^{3}-\frac{1}{7}a$, $\frac{1}{120379}a^{14}+\frac{3971}{120379}a^{12}-\frac{56141}{120379}a^{10}-\frac{58659}{120379}a^{8}-\frac{28916}{120379}a^{6}+\frac{15612}{120379}a^{4}+\frac{1203}{120379}a^{2}+\frac{185}{593}$, $\frac{1}{120379}a^{15}+\frac{3971}{120379}a^{13}-\frac{56141}{120379}a^{11}-\frac{58659}{120379}a^{9}-\frac{28916}{120379}a^{7}+\frac{15612}{120379}a^{5}+\frac{1203}{120379}a^{3}+\frac{185}{593}a$
Monogenic: | Not computed | |
Index: | $1$ | |
Inessential primes: | None |
Class group and class number
$C_{136}$, which has order $136$ (assuming GRH)
Unit group
Rank: | $7$ | sage: UK.rank()
gp: K.fu
magma: UnitRank(K);
oscar: rank(UK)
| |
Torsion generator: |
\( -1 \)
(order $2$)
| 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: |
$\frac{16}{593}a^{14}+\frac{2967}{4151}a^{12}+\frac{30623}{4151}a^{10}+\frac{156591}{4151}a^{8}+\frac{416660}{4151}a^{6}+\frac{555428}{4151}a^{4}+\frac{330426}{4151}a^{2}+\frac{65241}{4151}$, $\frac{735}{17197}a^{14}+\frac{121138}{120379}a^{12}+\frac{1095975}{120379}a^{10}+\frac{4890743}{120379}a^{8}+\frac{11365644}{120379}a^{6}+\frac{13186652}{120379}a^{4}+\frac{6498981}{120379}a^{2}+\frac{28291}{4151}$, $\frac{1934}{120379}a^{14}+\frac{44446}{120379}a^{12}+\frac{383498}{120379}a^{10}+\frac{1567030}{120379}a^{8}+\frac{3130954}{120379}a^{6}+\frac{2936363}{120379}a^{4}+\frac{1380767}{120379}a^{2}+\frac{15709}{4151}$, $\frac{95}{17197}a^{14}+\frac{9574}{120379}a^{12}+\frac{18119}{120379}a^{10}-\frac{263394}{120379}a^{8}-\frac{1395851}{120379}a^{6}-\frac{2240618}{120379}a^{4}-\frac{1091675}{120379}a^{2}-\frac{2826}{4151}$, $\frac{345}{17197}a^{14}+\frac{62827}{120379}a^{12}+\frac{654119}{120379}a^{10}+\frac{3532786}{120379}a^{8}+\frac{10563835}{120379}a^{6}+\frac{16980595}{120379}a^{4}+\frac{12741929}{120379}a^{2}+\frac{97788}{4151}$, $\frac{1269}{120379}a^{14}+\frac{34872}{120379}a^{12}+\frac{52197}{17197}a^{10}+\frac{1830424}{120379}a^{8}+\frac{4526805}{120379}a^{6}+\frac{5176981}{120379}a^{4}+\frac{353206}{17197}a^{2}+\frac{22686}{4151}$, $\frac{7124}{120379}a^{14}+\frac{172309}{120379}a^{12}+\frac{1618663}{120379}a^{10}+\frac{7601458}{120379}a^{8}+\frac{18921979}{120379}a^{6}+\frac{24117083}{120379}a^{4}+\frac{13608893}{120379}a^{2}+\frac{74997}{4151}$
| 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: | \( 4572.22444832 \) (assuming GRH) | sage: K.regulator()
gp: K.reg
magma: Regulator(K);
oscar: regulator(K)
|
Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{0}\cdot(2\pi)^{8}\cdot 4572.22444832 \cdot 136}{2\cdot\sqrt{18727984661882905600000000}}\cr\approx \mathstrut & 0.174513841524 \end{aligned}\] (assuming GRH)
Galois group
$C_2\wr D_4$ (as 16T1445):
A solvable group of order 2048 |
The 74 conjugacy class representatives for $C_2\wr D_4$ |
Character table for $C_2\wr D_4$ |
Intermediate fields
\(\Q(\sqrt{5}) \), 4.4.725.1, 8.8.582918125.1 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Sibling fields
Degree 16 siblings: | data not computed |
Degree 32 siblings: | data not computed |
Minimal sibling: | 16.0.4032060185764742044057600000000.1 |
Frobenius cycle types
$p$ | $2$ | $3$ | $5$ | $7$ | $11$ | $13$ | $17$ | $19$ | $23$ | $29$ | $31$ | $37$ | $41$ | $43$ | $47$ | $53$ | $59$ |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cycle type | R | ${\href{/padicField/3.8.0.1}{8} }^{2}$ | R | ${\href{/padicField/7.4.0.1}{4} }^{4}$ | ${\href{/padicField/11.4.0.1}{4} }^{3}{,}\,{\href{/padicField/11.2.0.1}{2} }{,}\,{\href{/padicField/11.1.0.1}{1} }^{2}$ | ${\href{/padicField/13.2.0.1}{2} }^{8}$ | ${\href{/padicField/17.8.0.1}{8} }^{2}$ | ${\href{/padicField/19.4.0.1}{4} }^{2}{,}\,{\href{/padicField/19.2.0.1}{2} }^{4}$ | ${\href{/padicField/23.4.0.1}{4} }^{2}{,}\,{\href{/padicField/23.2.0.1}{2} }^{4}$ | R | ${\href{/padicField/31.4.0.1}{4} }^{3}{,}\,{\href{/padicField/31.2.0.1}{2} }{,}\,{\href{/padicField/31.1.0.1}{1} }^{2}$ | ${\href{/padicField/37.4.0.1}{4} }^{4}$ | ${\href{/padicField/41.4.0.1}{4} }^{4}$ | ${\href{/padicField/43.8.0.1}{8} }^{2}$ | ${\href{/padicField/47.8.0.1}{8} }^{2}$ | ${\href{/padicField/53.4.0.1}{4} }^{4}$ | ${\href{/padicField/59.4.0.1}{4} }^{2}{,}\,{\href{/padicField/59.2.0.1}{2} }^{4}$ |
In the table, R denotes a ramified prime. Cycle lengths which are repeated in a cycle type are indicated by exponents.
Local algebras for ramified primes
$p$ | Label | Polynomial | $e$ | $f$ | $c$ | Galois group | Slope content |
---|---|---|---|---|---|---|---|
\(2\)
| Deg $16$ | $2$ | $8$ | $16$ | |||
\(5\)
| 5.8.4.1 | $x^{8} + 80 x^{7} + 2428 x^{6} + 33688 x^{5} + 195810 x^{4} + 305952 x^{3} + 870132 x^{2} + 1037416 x + 503089$ | $2$ | $4$ | $4$ | $C_4\times C_2$ | $[\ ]_{2}^{4}$ |
5.8.4.1 | $x^{8} + 80 x^{7} + 2428 x^{6} + 33688 x^{5} + 195810 x^{4} + 305952 x^{3} + 870132 x^{2} + 1037416 x + 503089$ | $2$ | $4$ | $4$ | $C_4\times C_2$ | $[\ ]_{2}^{4}$ | |
\(29\)
| 29.4.2.2 | $x^{4} - 696 x^{2} + 1682$ | $2$ | $2$ | $2$ | $C_4$ | $[\ ]_{2}^{2}$ |
29.4.0.1 | $x^{4} + 2 x^{2} + 15 x + 2$ | $1$ | $4$ | $0$ | $C_4$ | $[\ ]^{4}$ | |
29.8.4.1 | $x^{8} + 2784 x^{7} + 2906616 x^{6} + 1348864734 x^{5} + 234834277018 x^{4} + 41857830864 x^{3} + 492109772617 x^{2} + 3561769809750 x + 616658760166$ | $2$ | $4$ | $4$ | $C_4\times C_2$ | $[\ ]_{2}^{4}$ | |
\(1109\)
| Deg $2$ | $1$ | $2$ | $0$ | $C_2$ | $[\ ]^{2}$ | |
Deg $2$ | $1$ | $2$ | $0$ | $C_2$ | $[\ ]^{2}$ | ||
Deg $2$ | $1$ | $2$ | $0$ | $C_2$ | $[\ ]^{2}$ | ||
Deg $2$ | $1$ | $2$ | $0$ | $C_2$ | $[\ ]^{2}$ | ||
Deg $2$ | $1$ | $2$ | $0$ | $C_2$ | $[\ ]^{2}$ | ||
Deg $2$ | $1$ | $2$ | $0$ | $C_2$ | $[\ ]^{2}$ | ||
Deg $4$ | $2$ | $2$ | $2$ |