Normalized defining polynomial
\( x^{20} + 78 x^{18} + 2331 x^{16} + 34488 x^{14} + 274536 x^{12} + 1203552 x^{10} + 2835648 x^{8} + \cdots + 15552 \)
Invariants
| Degree: | $20$ |
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| Signature: | $(0, 10)$ |
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| Discriminant: |
\(148184566209122179801351864839045120000\)
\(\medspace = 2^{64}\cdot 3^{15}\cdot 5^{4}\cdot 173^{4}\)
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| Root discriminant: | \(81.01\) |
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| Galois root discriminant: | $2^{27/8}3^{3/4}5^{1/2}173^{1/2}\approx 695.5449954322967$ | ||
| Ramified primes: |
\(2\), \(3\), \(5\), \(173\)
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| Discriminant root field: | \(\Q(\sqrt{3}) \) | ||
| $\Aut(K/\Q)$: | $C_2$ |
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| This field is not Galois over $\Q$. | |||
| This is a CM field. | |||
| Reflex fields: | unavailable$^{512}$ | ||
Integral basis (with respect to field generator \(a\))
$1$, $a$, $a^{2}$, $a^{3}$, $\frac{1}{3}a^{4}$, $\frac{1}{3}a^{5}$, $\frac{1}{3}a^{6}$, $\frac{1}{6}a^{7}-\frac{1}{2}a^{3}$, $\frac{1}{18}a^{8}-\frac{1}{6}a^{4}$, $\frac{1}{18}a^{9}-\frac{1}{6}a^{5}$, $\frac{1}{36}a^{10}+\frac{1}{12}a^{6}-\frac{1}{6}a^{4}$, $\frac{1}{36}a^{11}-\frac{1}{12}a^{7}-\frac{1}{6}a^{5}-\frac{1}{2}a^{3}$, $\frac{1}{864}a^{12}-\frac{1}{144}a^{10}+\frac{5}{288}a^{8}+\frac{1}{24}a^{6}+\frac{1}{24}a^{4}-\frac{1}{2}a^{2}-\frac{1}{4}$, $\frac{1}{1728}a^{13}+\frac{1}{96}a^{11}-\frac{11}{576}a^{9}-\frac{1}{36}a^{8}+\frac{1}{16}a^{7}+\frac{1}{48}a^{5}-\frac{1}{12}a^{4}-\frac{1}{4}a^{3}-\frac{1}{2}a^{2}-\frac{1}{8}a$, $\frac{1}{1728}a^{14}-\frac{7}{576}a^{10}-\frac{1}{36}a^{9}+\frac{5}{288}a^{8}+\frac{7}{48}a^{6}-\frac{1}{12}a^{5}+\frac{1}{24}a^{4}-\frac{1}{2}a^{3}+\frac{3}{8}a^{2}+\frac{1}{4}$, $\frac{1}{1728}a^{15}-\frac{7}{576}a^{11}+\frac{5}{288}a^{9}-\frac{1}{48}a^{7}+\frac{1}{24}a^{5}-\frac{1}{8}a^{3}+\frac{1}{4}a$, $\frac{1}{51840}a^{16}-\frac{1}{8640}a^{14}-\frac{1}{5760}a^{12}-\frac{1}{72}a^{11}+\frac{13}{1440}a^{10}-\frac{5}{288}a^{8}-\frac{1}{24}a^{7}+\frac{1}{8}a^{6}-\frac{1}{12}a^{5}-\frac{37}{240}a^{4}-\frac{1}{2}a^{3}-\frac{1}{10}a^{2}-\frac{3}{10}$, $\frac{1}{51840}a^{17}-\frac{1}{8640}a^{15}-\frac{1}{5760}a^{13}+\frac{13}{1440}a^{11}-\frac{5}{288}a^{9}-\frac{1}{24}a^{7}-\frac{37}{240}a^{5}+\frac{2}{5}a^{3}-\frac{3}{10}a$, $\frac{1}{12621585265920}a^{18}-\frac{10556197}{1577698158240}a^{16}-\frac{73008181}{1402398362880}a^{14}+\frac{374646151}{701199181440}a^{12}-\frac{649574467}{70119918144}a^{10}-\frac{180849059}{8764989768}a^{8}+\frac{1279182043}{58433265120}a^{6}-\frac{1}{6}a^{5}-\frac{3865135997}{29216632560}a^{4}-\frac{730280243}{2434719380}a^{2}-\frac{1}{2}a-\frac{52967555}{486943876}$, $\frac{1}{12621585265920}a^{19}-\frac{10556197}{1577698158240}a^{17}-\frac{73008181}{1402398362880}a^{15}-\frac{93421237}{2103597544320}a^{13}+\frac{63087247}{7791102016}a^{11}-\frac{107696813}{70119918144}a^{9}-\frac{1}{36}a^{8}+\frac{2496541733}{58433265120}a^{7}-\frac{1}{6}a^{6}+\frac{65937153}{4869438760}a^{5}-\frac{1}{12}a^{4}-\frac{60800199}{1217359690}a^{3}+\frac{15800859}{973887752}a$
| Monogenic: | Not computed | |
| Index: | $1$ | |
| Inessential primes: | None |
Class group and class number
| Ideal class group: | $C_{2}\times C_{2}\times C_{492}$, which has order $1968$ (assuming GRH) |
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| Narrow class group: | $C_{2}\times C_{2}\times C_{492}$, which has order $1968$ (assuming GRH) |
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| Relative class number: | $1968$ (assuming GRH) |
Unit group
| Rank: | $9$ |
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| Torsion generator: |
\( -1 \)
(order $2$)
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| Fundamental units: |
$\frac{5175623}{87649897680}a^{18}+\frac{7272657271}{1577698158240}a^{16}+\frac{36279943849}{262949693040}a^{14}+\frac{538375006787}{262949693040}a^{12}+\frac{71830329317}{4382494884}a^{10}+\frac{2544089074759}{35059959072}a^{8}+\frac{844170875883}{4869438760}a^{6}+\frac{2975673860093}{14608316280}a^{4}+\frac{57163696256}{608679845}a^{2}+\frac{6486237445}{486943876}$, $\frac{372104101}{6310792632960}a^{18}+\frac{3570447007}{788849079120}a^{16}+\frac{92603562751}{701199181440}a^{14}+\frac{396810431323}{210359754432}a^{12}+\frac{2504959485061}{175299795360}a^{10}+\frac{2058804198323}{35059959072}a^{8}+\frac{1241699182291}{9738877520}a^{6}+\frac{321408022871}{2434719380}a^{4}+\frac{12147584677}{243471938}a^{2}+\frac{11424282723}{2434719380}$, $\frac{1076405}{26854436736}a^{18}+\frac{207923363}{67136091840}a^{16}+\frac{1361610431}{14919131520}a^{14}+\frac{7401798949}{5594674320}a^{12}+\frac{38166318463}{3729782880}a^{10}+\frac{4022088665}{93244572}a^{8}+\frac{3974954885}{41442032}a^{6}+\frac{15630911167}{155407620}a^{4}+\frac{945361349}{25901270}a^{2}+\frac{35507451}{12950635}$, $\frac{164744489}{2103597544320}a^{18}+\frac{958137197}{157769815824}a^{16}+\frac{75677938111}{420719508864}a^{14}+\frac{2761547515753}{1051798772160}a^{12}+\frac{1197070836667}{58433265120}a^{10}+\frac{1020732155387}{11686653024}a^{8}+\frac{5798942623171}{29216632560}a^{6}+\frac{1616540839147}{7304158140}a^{4}+\frac{60078973261}{608679845}a^{2}+\frac{28718392953}{2434719380}$, $\frac{58825673}{1051798772160}a^{18}+\frac{13709637251}{3155396316480}a^{16}+\frac{135675213493}{1051798772160}a^{14}+\frac{1985416849849}{1051798772160}a^{12}+\frac{32305019885}{2191247442}a^{10}+\frac{45607999075}{730415814}a^{8}+\frac{669514232379}{4869438760}a^{6}+\frac{2015386582969}{14608316280}a^{4}+\frac{27908284273}{608679845}a^{2}+\frac{2196797879}{243471938}$, $\frac{958033}{7459565760}a^{18}+\frac{222805157}{22378697280}a^{16}+\frac{6595689353}{22378697280}a^{14}+\frac{32053334591}{7459565760}a^{12}+\frac{41553912341}{1243260960}a^{10}+\frac{26313513787}{186489144}a^{8}+\frac{12034493792}{38851905}a^{6}+\frac{94816243661}{310815240}a^{4}+\frac{4447432229}{51802540}a^{2}+\frac{161054027}{25901270}$, $\frac{319921}{29216632560}a^{18}+\frac{2549399089}{3155396316480}a^{16}+\frac{11626104331}{525899386080}a^{14}+\frac{99393104099}{350599590720}a^{12}+\frac{78056009723}{43824948840}a^{10}+\frac{5068149193}{973887752}a^{8}+\frac{3173917066}{608679845}a^{6}-\frac{46701650071}{14608316280}a^{4}-\frac{7384988017}{1217359690}a^{2}-\frac{844172407}{1217359690}$, $\frac{496403683}{1262158526592}a^{18}+\frac{96597040007}{3155396316480}a^{16}+\frac{213132109363}{233733060480}a^{14}+\frac{7057756673417}{525899386080}a^{12}+\frac{2063084526543}{19477755040}a^{10}+\frac{8025922963963}{17529979536}a^{8}+\frac{2049675094015}{1947775504}a^{6}+\frac{8513776360613}{7304158140}a^{4}+\frac{297246889753}{608679845}a^{2}+\frac{67568682953}{1217359690}$, $\frac{900086149}{6310792632960}a^{18}+\frac{17557803713}{1577698158240}a^{16}+\frac{699629298581}{2103597544320}a^{14}+\frac{1723268350031}{350599590720}a^{12}+\frac{2276415780551}{58433265120}a^{10}+\frac{5917364816651}{35059959072}a^{8}+\frac{11312082370717}{29216632560}a^{6}+\frac{1560883489439}{3652079070}a^{4}+\frac{221681635377}{1217359690}a^{2}+\frac{51086027799}{2434719380}$
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| Regulator: | \( 255930231.626 \) (assuming GRH) |
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Class number formula
\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{0}\cdot(2\pi)^{10}\cdot 255930231.626 \cdot 1968}{2\cdot\sqrt{148184566209122179801351864839045120000}}\cr\approx \mathstrut & 1.9838730838 \end{aligned}\] (assuming GRH)
Galois group
$D_5^2.D_4$ (as 20T157):
| A solvable group of order 800 |
| The 26 conjugacy class representatives for $D_5^2.D_4$ |
| Character table for $D_5^2.D_4$ |
Intermediate fields
| \(\Q(\sqrt{6}) \), \(\Q(\sqrt{-3 + \sqrt{6}})\), 10.10.24403289466470400.1 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Sibling fields
| Degree 20 siblings: | data not computed |
| Degree 40 siblings: | data not computed |
| Arithmetically equivalent 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 | R | R | $20$ | ${\href{/padicField/11.10.0.1}{10} }^{2}$ | ${\href{/padicField/13.10.0.1}{10} }^{2}$ | $20$ | ${\href{/padicField/19.4.0.1}{4} }^{4}{,}\,{\href{/padicField/19.2.0.1}{2} }{,}\,{\href{/padicField/19.1.0.1}{1} }^{2}$ | ${\href{/padicField/23.5.0.1}{5} }^{2}{,}\,{\href{/padicField/23.2.0.1}{2} }^{4}{,}\,{\href{/padicField/23.1.0.1}{1} }^{2}$ | ${\href{/padicField/29.4.0.1}{4} }^{4}{,}\,{\href{/padicField/29.2.0.1}{2} }{,}\,{\href{/padicField/29.1.0.1}{1} }^{2}$ | $20$ | ${\href{/padicField/37.10.0.1}{10} }^{2}$ | $20$ | ${\href{/padicField/43.4.0.1}{4} }^{4}{,}\,{\href{/padicField/43.2.0.1}{2} }{,}\,{\href{/padicField/43.1.0.1}{1} }^{2}$ | ${\href{/padicField/47.5.0.1}{5} }^{2}{,}\,{\href{/padicField/47.2.0.1}{2} }^{4}{,}\,{\href{/padicField/47.1.0.1}{1} }^{2}$ | ${\href{/padicField/53.4.0.1}{4} }^{4}{,}\,{\href{/padicField/53.2.0.1}{2} }{,}\,{\href{/padicField/53.1.0.1}{1} }^{2}$ | ${\href{/padicField/59.2.0.1}{2} }^{10}$ |
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 |
|---|---|---|---|---|---|---|---|
|
\(2\)
| 2.1.4.10a1.8 | $x^{4} + 4 x^{3} + 12 x^{2} + 8 x + 10$ | $4$ | $1$ | $10$ | $D_{4}$ | $$[2, 3, \frac{7}{2}]$$ |
| 2.1.16.54o1.297 | $x^{16} + 8 x^{15} + 4 x^{14} + 8 x^{13} + 8 x^{9} + 2 x^{8} + 8 x^{7} + 8 x^{6} + 4 x^{4} + 14$ | $16$ | $1$ | $54$ | $C_4:C_4$ | $$[2, 3, \frac{7}{2}, 4]$$ | |
|
\(3\)
| 3.1.4.3a1.1 | $x^{4} + 3$ | $4$ | $1$ | $3$ | $D_{4}$ | $$[\ ]_{4}^{2}$$ |
| 3.4.4.12a1.3 | $x^{16} + 8 x^{15} + 24 x^{14} + 32 x^{13} + 24 x^{12} + 48 x^{11} + 96 x^{10} + 64 x^{9} + 24 x^{8} + 96 x^{7} + 96 x^{6} + 32 x^{4} + 64 x^{3} + 19$ | $4$ | $4$ | $12$ | $C_4:C_4$ | $$[\ ]_{4}^{4}$$ | |
|
\(5\)
| $\Q_{5}$ | $x + 3$ | $1$ | $1$ | $0$ | Trivial | $$[\ ]$$ |
| $\Q_{5}$ | $x + 3$ | $1$ | $1$ | $0$ | Trivial | $$[\ ]$$ | |
| 5.2.1.0a1.1 | $x^{2} + 4 x + 2$ | $1$ | $2$ | $0$ | $C_2$ | $$[\ ]^{2}$$ | |
| 5.4.1.0a1.1 | $x^{4} + 4 x^{2} + 4 x + 2$ | $1$ | $4$ | $0$ | $C_4$ | $$[\ ]^{4}$$ | |
| 5.4.1.0a1.1 | $x^{4} + 4 x^{2} + 4 x + 2$ | $1$ | $4$ | $0$ | $C_4$ | $$[\ ]^{4}$$ | |
| 5.2.2.2a1.1 | $x^{4} + 8 x^{3} + 20 x^{2} + 21 x + 4$ | $2$ | $2$ | $2$ | $C_4$ | $$[\ ]_{2}^{2}$$ | |
| 5.2.2.2a1.1 | $x^{4} + 8 x^{3} + 20 x^{2} + 21 x + 4$ | $2$ | $2$ | $2$ | $C_4$ | $$[\ ]_{2}^{2}$$ | |
|
\(173\)
| $\Q_{173}$ | $x + 171$ | $1$ | $1$ | $0$ | Trivial | $$[\ ]$$ |
| $\Q_{173}$ | $x + 171$ | $1$ | $1$ | $0$ | Trivial | $$[\ ]$$ | |
| 173.2.1.0a1.1 | $x^{2} + 169 x + 2$ | $1$ | $2$ | $0$ | $C_2$ | $$[\ ]^{2}$$ | |
| 173.2.2.2a1.1 | $x^{4} + 338 x^{3} + 28565 x^{2} + 849 x + 4$ | $2$ | $2$ | $2$ | $C_4$ | $$[\ ]_{2}^{2}$$ | |
| 173.4.1.0a1.1 | $x^{4} + x^{2} + 102 x + 2$ | $1$ | $4$ | $0$ | $C_4$ | $$[\ ]^{4}$$ | |
| 173.4.1.0a1.1 | $x^{4} + x^{2} + 102 x + 2$ | $1$ | $4$ | $0$ | $C_4$ | $$[\ ]^{4}$$ | |
| 173.2.2.2a1.1 | $x^{4} + 338 x^{3} + 28565 x^{2} + 849 x + 4$ | $2$ | $2$ | $2$ | $C_4$ | $$[\ ]_{2}^{2}$$ |