Normalized defining polynomial
\( x^{20} + 30 x^{18} + 395 x^{16} + 2930 x^{14} + 13305 x^{12} + 39200 x^{10} + 79900 x^{8} + 109000 x^{6} + \cdots + 10000 \)
Invariants
| Degree: | $20$ |
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| Signature: | $(0, 10)$ |
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| Discriminant: |
\(975310301665730560000000000000000\)
\(\medspace = 2^{28}\cdot 5^{16}\cdot 47^{8}\)
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| Root discriminant: | \(44.61\) |
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| Galois root discriminant: | not computed | ||
| Ramified primes: |
\(2\), \(5\), \(47\)
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| Discriminant root field: | \(\Q\) | ||
| $\Aut(K/\Q)$: | $C_2$ |
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| This field is not Galois over $\Q$. | |||
| This is not a CM field. | |||
| This field has no CM subfields. | |||
Integral basis (with respect to field generator \(a\))
$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $\frac{1}{2}a^{7}-\frac{1}{2}a^{5}-\frac{1}{2}a^{3}$, $\frac{1}{10}a^{8}-\frac{1}{2}a^{6}-\frac{1}{2}a^{4}$, $\frac{1}{10}a^{9}-\frac{1}{2}a^{3}$, $\frac{1}{10}a^{10}-\frac{1}{2}a^{4}$, $\frac{1}{20}a^{11}-\frac{1}{20}a^{10}-\frac{1}{20}a^{8}-\frac{1}{4}a^{6}+\frac{1}{4}a^{5}-\frac{1}{2}a^{2}$, $\frac{1}{100}a^{12}-\frac{1}{20}a^{10}-\frac{1}{20}a^{9}-\frac{1}{20}a^{8}-\frac{1}{4}a^{7}-\frac{1}{5}a^{6}+\frac{1}{4}a^{5}-\frac{1}{5}a^{4}-\frac{1}{2}a^{3}-\frac{1}{2}a^{2}$, $\frac{1}{100}a^{13}-\frac{1}{20}a^{9}-\frac{1}{5}a^{7}-\frac{1}{2}a^{6}+\frac{1}{20}a^{5}-\frac{1}{2}a^{4}-\frac{1}{2}a^{3}-\frac{1}{2}a^{2}$, $\frac{1}{100}a^{14}-\frac{1}{20}a^{10}+\frac{1}{20}a^{6}-\frac{1}{2}a^{4}$, $\frac{1}{200}a^{15}-\frac{1}{40}a^{11}+\frac{1}{40}a^{7}-\frac{1}{2}a^{6}+\frac{1}{4}a^{5}-\frac{1}{2}a^{4}-\frac{1}{2}a^{2}-\frac{1}{2}a$, $\frac{1}{1000}a^{16}-\frac{1}{200}a^{12}-\frac{1}{50}a^{10}+\frac{1}{200}a^{8}+\frac{1}{20}a^{6}-\frac{1}{10}a^{4}-\frac{1}{2}a^{2}$, $\frac{1}{2000}a^{17}-\frac{1}{200}a^{14}-\frac{1}{400}a^{13}-\frac{1}{100}a^{11}-\frac{1}{40}a^{10}+\frac{1}{400}a^{9}+\frac{1}{40}a^{7}+\frac{19}{40}a^{6}-\frac{1}{20}a^{5}-\frac{1}{4}a^{3}-\frac{1}{2}a^{2}-\frac{1}{2}a-\frac{1}{2}$, $\frac{1}{1277931578000}a^{18}+\frac{1953803}{9128082700}a^{16}-\frac{724563593}{255586315600}a^{14}+\frac{254362663}{63896578900}a^{12}+\frac{5872042441}{255586315600}a^{10}-\frac{1}{20}a^{9}-\frac{165108501}{5111726312}a^{8}-\frac{1}{4}a^{7}-\frac{92178028}{638965789}a^{6}+\frac{1}{4}a^{5}+\frac{438858779}{12779315780}a^{4}-\frac{1}{2}a^{3}+\frac{162034277}{638965789}a^{2}+\frac{68952141}{638965789}$, $\frac{1}{1277931578000}a^{19}+\frac{1953803}{9128082700}a^{17}+\frac{110673597}{51117263120}a^{15}+\frac{254362663}{63896578900}a^{13}-\frac{517615449}{255586315600}a^{11}-\frac{1}{20}a^{10}-\frac{165108501}{5111726312}a^{9}-\frac{1}{20}a^{8}-\frac{3048155331}{25558631560}a^{7}-\frac{1}{4}a^{6}+\frac{908421931}{3194828945}a^{5}+\frac{162034277}{638965789}a^{3}-\frac{1}{2}a^{2}-\frac{501061507}{1277931578}a$
| Monogenic: | No | |
| Index: | Not computed | |
| Inessential primes: | $2$ |
Class group and class number
| Ideal class group: | $C_{2}$, which has order $2$ (assuming GRH) |
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| Narrow class group: | $C_{2}$, which has order $2$ (assuming GRH) |
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Unit group
| Rank: | $9$ |
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| Torsion generator: |
\( -1 \)
(order $2$)
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| Fundamental units: |
$\frac{204037}{4189939600}a^{18}-\frac{80973}{59856280}a^{16}-\frac{67509711}{4189939600}a^{14}-\frac{43425043}{418993960}a^{12}-\frac{317819753}{837987920}a^{10}-\frac{172024899}{209496980}a^{8}-\frac{250070419}{209496980}a^{6}-\frac{40951941}{41899396}a^{4}-\frac{6031573}{10474849}a^{2}-\frac{7707793}{10474849}$, $\frac{6229431}{58087799000}a^{18}+\frac{25893669}{8298257000}a^{16}+\frac{456935419}{11617559800}a^{14}+\frac{3168057037}{11617559800}a^{12}+\frac{12827755929}{11617559800}a^{10}+\frac{30868028173}{11617559800}a^{8}+\frac{2188239939}{580877990}a^{6}+\frac{507750234}{290438995}a^{4}-\frac{388168157}{116175598}a^{2}-\frac{187550373}{58087799}$, $\frac{4553863}{255586315600}a^{18}-\frac{5393834}{11410103375}a^{16}-\frac{1396347201}{255586315600}a^{14}-\frac{2288626743}{63896578900}a^{12}-\frac{39945468043}{255586315600}a^{10}-\frac{71388608209}{127793157800}a^{8}-\frac{20841215083}{12779315780}a^{6}-\frac{33231042527}{12779315780}a^{4}-\frac{1801403803}{1277931578}a^{2}-\frac{401654139}{638965789}$, $\frac{155136501}{638965789000}a^{18}+\frac{163800173}{22820206750}a^{16}+\frac{11904414449}{127793157800}a^{14}+\frac{4339947351}{6389657890}a^{12}+\frac{77101356403}{25558631560}a^{10}+\frac{551352423407}{63896578900}a^{8}+\frac{216080145091}{12779315780}a^{6}+\frac{68882841274}{3194828945}a^{4}+\frac{9649975576}{638965789}a^{2}+\frac{4886078326}{638965789}$, $\frac{12480133}{182561654000}a^{19}-\frac{596399}{5280709000}a^{18}-\frac{339423379}{182561654000}a^{17}-\frac{2341991}{754387000}a^{16}-\frac{775672983}{36512330800}a^{15}-\frac{3856619}{105614180}a^{14}-\frac{4542024717}{36512330800}a^{13}-\frac{48649437}{211228360}a^{12}-\frac{12755578457}{36512330800}a^{11}-\frac{430834023}{528070900}a^{10}-\frac{7137999449}{36512330800}a^{9}-\frac{1796451417}{1056141800}a^{8}+\frac{979782781}{730246616}a^{7}-\frac{111402847}{42245672}a^{6}+\frac{3881199741}{912808270}a^{5}-\frac{33022221}{10561418}a^{4}+\frac{2129549569}{365123308}a^{3}-\frac{11470104}{5280709}a^{2}+\frac{339090483}{182561654}a-\frac{36782435}{10561418}$, $\frac{6861109}{255586315600}a^{19}+\frac{30214887}{255586315600}a^{18}+\frac{34453911}{45640413500}a^{17}+\frac{62846261}{18256165400}a^{16}+\frac{2341202551}{255586315600}a^{15}+\frac{11098248961}{255586315600}a^{14}+\frac{38999010}{638965789}a^{13}+\frac{38501039637}{127793157800}a^{12}+\frac{61620824033}{255586315600}a^{11}+\frac{62457653367}{51117263120}a^{10}+\frac{78447816119}{127793157800}a^{9}+\frac{9506194239}{3194828945}a^{8}+\frac{2880811977}{2555863156}a^{7}+\frac{11767814801}{2555863156}a^{6}+\frac{13453295739}{12779315780}a^{5}+\frac{53115754701}{12779315780}a^{4}-\frac{393684278}{638965789}a^{3}+\frac{611279360}{638965789}a^{2}-\frac{351503531}{638965789}a-\frac{162662305}{638965789}$, $\frac{50594823}{638965789000}a^{19}-\frac{7513511}{638965789000}a^{18}-\frac{100766173}{45640413500}a^{17}-\frac{325181}{1825616540}a^{16}-\frac{1709339323}{63896578900}a^{15}-\frac{110569693}{127793157800}a^{14}-\frac{459641573}{2555863156}a^{13}-\frac{175142127}{63896578900}a^{12}-\frac{2348878927}{3194828945}a^{11}-\frac{7022180181}{127793157800}a^{10}-\frac{65456780693}{31948289450}a^{9}-\frac{7034074573}{12779315780}a^{8}-\frac{22566758021}{5111726312}a^{7}-\frac{25490055179}{12779315780}a^{6}-\frac{19004245252}{3194828945}a^{5}-\frac{14145891707}{6389657890}a^{4}-\frac{1833271974}{638965789}a^{3}+\frac{229661848}{638965789}a^{2}-\frac{1070411675}{1277931578}a+\frac{305756720}{638965789}$, $\frac{45100849}{127793157800}a^{18}+\frac{957312047}{91280827000}a^{16}+\frac{17403225527}{127793157800}a^{14}+\frac{5053880631}{5111726312}a^{12}+\frac{553547603069}{127793157800}a^{10}+\frac{1535922333059}{127793157800}a^{8}+\frac{284701671607}{12779315780}a^{6}+\frac{81349047606}{3194828945}a^{4}+\frac{15462313919}{1277931578}a^{2}+\frac{1211141482}{638965789}$, $\frac{547730221}{182561654000}a^{19}-\frac{5046563689}{638965789000}a^{18}+\frac{7177643199}{91280827000}a^{17}-\frac{552306001}{2282020675}a^{16}+\frac{31014048651}{36512330800}a^{15}-\frac{416941296133}{127793157800}a^{14}+\frac{81602628773}{18256165400}a^{13}-\frac{1588596825847}{63896578900}a^{12}+\frac{326339195649}{36512330800}a^{11}-\frac{14852090014049}{127793157800}a^{10}-\frac{142478922613}{9128082700}a^{9}-\frac{1117217705507}{3194828945}a^{8}-\frac{109675355321}{912808270}a^{7}-\frac{9051029817883}{12779315780}a^{6}-\frac{581492221121}{1825616540}a^{5}-\frac{1181726276725}{1277931578}a^{4}-\frac{78759950575}{182561654}a^{3}-\frac{392033464111}{638965789}a^{2}-\frac{10044854927}{91280827}a-\frac{79130457569}{638965789}$
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| Regulator: | \( 133777304.43188025 \) (assuming GRH) |
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Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{0}\cdot(2\pi)^{10}\cdot 133777304.43188025 \cdot 2}{2\cdot\sqrt{975310301665730560000000000000000}}\cr\approx \mathstrut & 0.410780404921031 \end{aligned}\] (assuming GRH)
Galois group
$C_2^9.A_5^2.C_4$ (as 20T1025):
| A non-solvable group of order 7372800 |
| The 216 conjugacy class representatives for $C_2^9.A_5^2.C_4$ |
| Character table for $C_2^9.A_5^2.C_4$ |
Intermediate fields
| \(\Q(\sqrt{5}) \), 10.2.19518724000000.1 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Sibling fields
| Degree 20 sibling: | data not computed |
| Degree 40 siblings: | data not computed |
| Minimal sibling: | This field is its own minimal sibling |
Frobenius cycle types
| $p$ | $2$ | $3$ | $5$ | $7$ | $11$ | $13$ | $17$ | $19$ | $23$ | $29$ | $31$ | $37$ | $41$ | $43$ | $47$ | $53$ | $59$ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cycle type | R | $16{,}\,{\href{/padicField/3.4.0.1}{4} }$ | R | ${\href{/padicField/7.8.0.1}{8} }^{2}{,}\,{\href{/padicField/7.2.0.1}{2} }^{2}$ | ${\href{/padicField/11.4.0.1}{4} }^{4}{,}\,{\href{/padicField/11.2.0.1}{2} }^{2}$ | $16{,}\,{\href{/padicField/13.4.0.1}{4} }$ | ${\href{/padicField/17.8.0.1}{8} }^{2}{,}\,{\href{/padicField/17.2.0.1}{2} }^{2}$ | ${\href{/padicField/19.10.0.1}{10} }{,}\,{\href{/padicField/19.6.0.1}{6} }{,}\,{\href{/padicField/19.2.0.1}{2} }^{2}$ | $16{,}\,{\href{/padicField/23.4.0.1}{4} }$ | ${\href{/padicField/29.8.0.1}{8} }{,}\,{\href{/padicField/29.4.0.1}{4} }^{2}{,}\,{\href{/padicField/29.2.0.1}{2} }{,}\,{\href{/padicField/29.1.0.1}{1} }^{2}$ | ${\href{/padicField/31.4.0.1}{4} }^{3}{,}\,{\href{/padicField/31.3.0.1}{3} }^{2}{,}\,{\href{/padicField/31.2.0.1}{2} }$ | ${\href{/padicField/37.12.0.1}{12} }{,}\,{\href{/padicField/37.8.0.1}{8} }$ | ${\href{/padicField/41.3.0.1}{3} }^{4}{,}\,{\href{/padicField/41.1.0.1}{1} }^{8}$ | ${\href{/padicField/43.8.0.1}{8} }^{2}{,}\,{\href{/padicField/43.2.0.1}{2} }^{2}$ | R | $16{,}\,{\href{/padicField/53.4.0.1}{4} }$ | ${\href{/padicField/59.10.0.1}{10} }^{2}$ |
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 |
|---|---|---|---|---|---|---|---|
|
\(2\)
| 2.2.4.12a6.2 | $x^{8} + 6 x^{7} + 18 x^{6} + 36 x^{5} + 49 x^{4} + 48 x^{3} + 32 x^{2} + 18 x + 5$ | $4$ | $2$ | $12$ | $(C_8:C_2):C_2$ | $$[2, 2, 2]^{4}$$ |
| 2.2.6.16a1.8 | $x^{12} + 6 x^{11} + 23 x^{10} + 60 x^{9} + 120 x^{8} + 186 x^{7} + 233 x^{6} + 234 x^{5} + 192 x^{4} + 124 x^{3} + 63 x^{2} + 26 x + 7$ | $6$ | $2$ | $16$ | 12T30 | $$[\frac{4}{3}, \frac{4}{3}, 2]_{3}^{2}$$ | |
|
\(5\)
| 5.1.8.7a1.1 | $x^{8} + 5$ | $8$ | $1$ | $7$ | $C_8:C_2$ | $$[\ ]_{8}^{2}$$ |
| 5.3.4.9a1.3 | $x^{12} + 12 x^{10} + 12 x^{9} + 54 x^{8} + 108 x^{7} + 162 x^{6} + 324 x^{5} + 405 x^{4} + 432 x^{3} + 486 x^{2} + 324 x + 86$ | $4$ | $3$ | $9$ | $C_{12}$ | $$[\ ]_{4}^{3}$$ | |
|
\(47\)
| 47.4.1.0a1.1 | $x^{4} + 8 x^{2} + 40 x + 5$ | $1$ | $4$ | $0$ | $C_4$ | $$[\ ]^{4}$$ |
| 47.4.1.0a1.1 | $x^{4} + 8 x^{2} + 40 x + 5$ | $1$ | $4$ | $0$ | $C_4$ | $$[\ ]^{4}$$ | |
| 47.2.3.4a1.1 | $x^{6} + 135 x^{5} + 6090 x^{4} + 92475 x^{3} + 30450 x^{2} + 3422 x + 125$ | $3$ | $2$ | $4$ | $S_3\times C_3$ | $$[\ ]_{3}^{6}$$ | |
| 47.2.3.4a1.1 | $x^{6} + 135 x^{5} + 6090 x^{4} + 92475 x^{3} + 30450 x^{2} + 3422 x + 125$ | $3$ | $2$ | $4$ | $S_3\times C_3$ | $$[\ ]_{3}^{6}$$ |