Properties

Label 23.1.831...703.1
Degree $23$
Signature $[1, 11]$
Discriminant $-8.317\times 10^{30}$
Root discriminant \(22.10\)
Ramified prime $647$
Class number $1$ (GRH)
Class group trivial (GRH)
Galois group $D_{23}$ (as 23T2)

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Show commands: Magma / Oscar / PariGP / SageMath

Normalized defining polynomial

sage: x = polygen(QQ); K.<a> = NumberField(x^23 - 2*x^22 - 3*x^21 + 13*x^20 - 19*x^19 + 21*x^18 - 75*x^16 + 202*x^15 - 378*x^14 + 596*x^13 - 798*x^12 + 955*x^11 - 995*x^10 + 849*x^9 - 610*x^8 + 384*x^7 - 151*x^6 + 2*x^5 + 46*x^4 - 37*x^3 + 3*x^2 + 20*x + 1)
 
gp: K = bnfinit(y^23 - 2*y^22 - 3*y^21 + 13*y^20 - 19*y^19 + 21*y^18 - 75*y^16 + 202*y^15 - 378*y^14 + 596*y^13 - 798*y^12 + 955*y^11 - 995*y^10 + 849*y^9 - 610*y^8 + 384*y^7 - 151*y^6 + 2*y^5 + 46*y^4 - 37*y^3 + 3*y^2 + 20*y + 1, 1)
 
magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^23 - 2*x^22 - 3*x^21 + 13*x^20 - 19*x^19 + 21*x^18 - 75*x^16 + 202*x^15 - 378*x^14 + 596*x^13 - 798*x^12 + 955*x^11 - 995*x^10 + 849*x^9 - 610*x^8 + 384*x^7 - 151*x^6 + 2*x^5 + 46*x^4 - 37*x^3 + 3*x^2 + 20*x + 1);
 
oscar: Qx, x = PolynomialRing(QQ); K, a = NumberField(x^23 - 2*x^22 - 3*x^21 + 13*x^20 - 19*x^19 + 21*x^18 - 75*x^16 + 202*x^15 - 378*x^14 + 596*x^13 - 798*x^12 + 955*x^11 - 995*x^10 + 849*x^9 - 610*x^8 + 384*x^7 - 151*x^6 + 2*x^5 + 46*x^4 - 37*x^3 + 3*x^2 + 20*x + 1)
 

\( x^{23} - 2 x^{22} - 3 x^{21} + 13 x^{20} - 19 x^{19} + 21 x^{18} - 75 x^{16} + 202 x^{15} - 378 x^{14} + \cdots + 1 \) Copy content Toggle raw display

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

Invariants

Degree:  $23$
sage: K.degree()
 
gp: poldegree(K.pol)
 
magma: Degree(K);
 
oscar: degree(K)
 
Signature:  $[1, 11]$
sage: K.signature()
 
gp: K.sign
 
magma: Signature(K);
 
oscar: signature(K)
 
Discriminant:   \(-8316624386164136054632388935703\) \(\medspace = -\,647^{11}\) Copy content Toggle raw display
sage: K.disc()
 
gp: K.disc
 
magma: OK := Integers(K); Discriminant(OK);
 
oscar: OK = ring_of_integers(K); discriminant(OK)
 
Root discriminant:  \(22.10\)
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:  $647^{1/2}\approx 25.436194683953808$
Ramified primes:   \(647\) Copy content Toggle raw display
sage: K.disc().support()
 
gp: factor(abs(K.disc))[,1]~
 
magma: PrimeDivisors(Discriminant(OK));
 
oscar: prime_divisors(discriminant((OK)))
 
Discriminant root field:  \(\Q(\sqrt{-647}) \)
$\card{ \Aut(K/\Q) }$:  $1$
sage: K.automorphisms()
 
magma: Automorphisms(K);
 
oscar: automorphisms(K)
 
This field is not Galois over $\Q$.
This is not a CM field.

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

$1$, $a$, $a^{2}$, $a^{3}$, $a^{4}$, $a^{5}$, $a^{6}$, $a^{7}$, $a^{8}$, $a^{9}$, $a^{10}$, $a^{11}$, $a^{12}$, $a^{13}$, $a^{14}$, $\frac{1}{5}a^{15}+\frac{2}{5}a^{13}-\frac{1}{5}a^{12}-\frac{1}{5}a^{11}+\frac{2}{5}a^{10}-\frac{2}{5}a^{8}+\frac{2}{5}a^{7}-\frac{2}{5}a^{6}+\frac{2}{5}a^{5}+\frac{1}{5}a^{4}+\frac{1}{5}a^{3}-\frac{1}{5}a^{2}-\frac{2}{5}a-\frac{2}{5}$, $\frac{1}{5}a^{16}+\frac{2}{5}a^{14}-\frac{1}{5}a^{13}-\frac{1}{5}a^{12}+\frac{2}{5}a^{11}-\frac{2}{5}a^{9}+\frac{2}{5}a^{8}-\frac{2}{5}a^{7}+\frac{2}{5}a^{6}+\frac{1}{5}a^{5}+\frac{1}{5}a^{4}-\frac{1}{5}a^{3}-\frac{2}{5}a^{2}-\frac{2}{5}a$, $\frac{1}{5}a^{17}-\frac{1}{5}a^{14}-\frac{1}{5}a^{12}+\frac{2}{5}a^{11}-\frac{1}{5}a^{10}+\frac{2}{5}a^{9}+\frac{2}{5}a^{8}-\frac{2}{5}a^{7}+\frac{2}{5}a^{5}+\frac{2}{5}a^{4}+\frac{1}{5}a^{3}-\frac{1}{5}a-\frac{1}{5}$, $\frac{1}{5}a^{18}+\frac{1}{5}a^{13}+\frac{1}{5}a^{12}-\frac{2}{5}a^{11}-\frac{1}{5}a^{10}+\frac{2}{5}a^{9}+\frac{1}{5}a^{8}+\frac{2}{5}a^{7}-\frac{1}{5}a^{5}+\frac{2}{5}a^{4}+\frac{1}{5}a^{3}-\frac{2}{5}a^{2}+\frac{2}{5}a-\frac{2}{5}$, $\frac{1}{5}a^{19}+\frac{1}{5}a^{14}+\frac{1}{5}a^{13}-\frac{2}{5}a^{12}-\frac{1}{5}a^{11}+\frac{2}{5}a^{10}+\frac{1}{5}a^{9}+\frac{2}{5}a^{8}-\frac{1}{5}a^{6}+\frac{2}{5}a^{5}+\frac{1}{5}a^{4}-\frac{2}{5}a^{3}+\frac{2}{5}a^{2}-\frac{2}{5}a$, $\frac{1}{275}a^{20}-\frac{3}{55}a^{19}+\frac{1}{25}a^{18}+\frac{6}{275}a^{17}+\frac{2}{25}a^{16}-\frac{4}{55}a^{15}+\frac{54}{275}a^{14}+\frac{1}{55}a^{13}-\frac{12}{25}a^{12}+\frac{42}{275}a^{11}+\frac{47}{275}a^{10}+\frac{42}{275}a^{9}-\frac{91}{275}a^{8}+\frac{73}{275}a^{7}-\frac{97}{275}a^{6}-\frac{73}{275}a^{5}+\frac{23}{275}a^{4}+\frac{26}{275}a^{3}+\frac{68}{275}a^{2}+\frac{39}{275}a+\frac{119}{275}$, $\frac{1}{193325}a^{21}+\frac{6}{17575}a^{20}-\frac{19079}{193325}a^{19}-\frac{8948}{193325}a^{18}-\frac{15937}{193325}a^{17}+\frac{9352}{193325}a^{16}+\frac{14164}{193325}a^{15}+\frac{93754}{193325}a^{14}-\frac{4952}{193325}a^{13}-\frac{5474}{38665}a^{12}+\frac{60099}{193325}a^{11}+\frac{52}{5225}a^{10}-\frac{8509}{17575}a^{9}+\frac{55512}{193325}a^{8}-\frac{17779}{193325}a^{7}-\frac{1212}{38665}a^{6}-\frac{12332}{38665}a^{5}+\frac{71629}{193325}a^{4}+\frac{47549}{193325}a^{3}+\frac{3233}{10175}a^{2}-\frac{187}{17575}a+\frac{15414}{193325}$, $\frac{1}{16889065325}a^{22}+\frac{6236}{16889065325}a^{21}+\frac{15050612}{16889065325}a^{20}+\frac{25039191}{456461225}a^{19}+\frac{1541886859}{16889065325}a^{18}+\frac{233319718}{16889065325}a^{17}+\frac{7588288}{456461225}a^{16}+\frac{934312404}{16889065325}a^{15}-\frac{4959075178}{16889065325}a^{14}-\frac{78682011}{3377813065}a^{13}+\frac{536483197}{16889065325}a^{12}+\frac{689341351}{16889065325}a^{11}+\frac{4786760163}{16889065325}a^{10}+\frac{148378891}{888898175}a^{9}+\frac{644631076}{3377813065}a^{8}+\frac{8099028858}{16889065325}a^{7}+\frac{5025800893}{16889065325}a^{6}+\frac{5105693096}{16889065325}a^{5}+\frac{1067482887}{16889065325}a^{4}-\frac{2095142937}{16889065325}a^{3}-\frac{4610451389}{16889065325}a^{2}-\frac{6103940692}{16889065325}a-\frac{3711736931}{16889065325}$ Copy content Toggle raw display

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

Monogenic:  No
Index:  Not computed
Inessential primes:  $5$

Class group and class number

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

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

Unit group

sage: UK = K.unit_group()
 
magma: UK, fUK := UnitGroup(K);
 
oscar: UK, fUK = unit_group(OK)
 
Rank:  $11$
sage: UK.rank()
 
gp: K.fu
 
magma: UnitRank(K);
 
oscar: rank(UK)
 
Torsion generator:   \( -1 \)  (order $2$) Copy content Toggle raw display
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:   $\frac{812678413}{16889065325}a^{22}-\frac{52028243}{456461225}a^{21}-\frac{3228708099}{16889065325}a^{20}+\frac{12328573847}{16889065325}a^{19}-\frac{13615730822}{16889065325}a^{18}+\frac{12920257576}{16889065325}a^{17}+\frac{4790191933}{16889065325}a^{16}-\frac{74609096329}{16889065325}a^{15}+\frac{168858186111}{16889065325}a^{14}-\frac{288887910317}{16889065325}a^{13}+\frac{434708175028}{16889065325}a^{12}-\frac{107760037102}{3377813065}a^{11}+\frac{597451945736}{16889065325}a^{10}-\frac{571916535374}{16889065325}a^{9}+\frac{374789573088}{16889065325}a^{8}-\frac{185246864343}{16889065325}a^{7}+\frac{39627989746}{16889065325}a^{6}+\frac{92061047556}{16889065325}a^{5}-\frac{136216139643}{16889065325}a^{4}+\frac{95378875127}{16889065325}a^{3}-\frac{65997598053}{16889065325}a^{2}-\frac{12641836642}{16889065325}a+\frac{14428923637}{16889065325}$, $\frac{9390537}{456461225}a^{22}-\frac{663331444}{16889065325}a^{21}-\frac{1197685008}{16889065325}a^{20}+\frac{826078404}{3377813065}a^{19}-\frac{5414037143}{16889065325}a^{18}+\frac{1494044914}{3377813065}a^{17}-\frac{145386388}{1535369575}a^{16}-\frac{23146907106}{16889065325}a^{15}+\frac{61341834594}{16889065325}a^{14}-\frac{122371478664}{16889065325}a^{13}+\frac{10883524126}{888898175}a^{12}-\frac{290172111149}{16889065325}a^{11}+\frac{10085389522}{456461225}a^{10}-\frac{421781506568}{16889065325}a^{9}+\frac{21275231518}{888898175}a^{8}-\frac{14190122588}{675562613}a^{7}+\frac{284006985763}{16889065325}a^{6}-\frac{16607085982}{1535369575}a^{5}+\frac{95443715027}{16889065325}a^{4}-\frac{48946684448}{16889065325}a^{3}+\frac{20145952509}{16889065325}a^{2}-\frac{9705555284}{16889065325}a+\frac{8607536032}{16889065325}$, $\frac{1196627247}{16889065325}a^{22}-\frac{1590721923}{16889065325}a^{21}-\frac{11140604}{41496475}a^{20}+\frac{1157554774}{1535369575}a^{19}-\frac{15040889964}{16889065325}a^{18}+\frac{1309223204}{1535369575}a^{17}+\frac{11705125118}{16889065325}a^{16}-\frac{4350921273}{888898175}a^{15}+\frac{189160213031}{16889065325}a^{14}-\frac{5927058559}{307073915}a^{13}+\frac{483911484528}{16889065325}a^{12}-\frac{616939708742}{16889065325}a^{11}+\frac{713010641427}{16889065325}a^{10}-\frac{692570128566}{16889065325}a^{9}+\frac{546926257342}{16889065325}a^{8}-\frac{72920050649}{3377813065}a^{7}+\frac{4081476159}{307073915}a^{6}-\frac{69044614522}{16889065325}a^{5}-\frac{8892378672}{16889065325}a^{4}+\frac{21759548754}{16889065325}a^{3}+\frac{6392145431}{16889065325}a^{2}-\frac{150475612}{1535369575}a+\frac{3629332609}{3377813065}$, $\frac{369638233}{16889065325}a^{22}-\frac{447893803}{16889065325}a^{21}-\frac{446581077}{16889065325}a^{20}+\frac{69202059}{307073915}a^{19}-\frac{8433612047}{16889065325}a^{18}+\frac{723717199}{1535369575}a^{17}-\frac{987586103}{16889065325}a^{16}-\frac{17958153847}{16889065325}a^{15}+\frac{72321493939}{16889065325}a^{14}-\frac{12727132043}{1535369575}a^{13}+\frac{2372997376}{177779635}a^{12}-\frac{65259370038}{3377813065}a^{11}+\frac{402841722131}{16889065325}a^{10}-\frac{437523977533}{16889065325}a^{9}+\frac{4448114263}{177779635}a^{8}-\frac{317031831023}{16889065325}a^{7}+\frac{225081459688}{16889065325}a^{6}-\frac{128714509201}{16889065325}a^{5}+\frac{34464632701}{16889065325}a^{4}+\frac{21953236653}{16889065325}a^{3}-\frac{1366407987}{3377813065}a^{2}+\frac{9315775608}{16889065325}a+\frac{1672875318}{3377813065}$, $\frac{207435893}{16889065325}a^{22}-\frac{19519860}{675562613}a^{21}-\frac{18018414}{675562613}a^{20}+\frac{2561749863}{16889065325}a^{19}-\frac{4906003247}{16889065325}a^{18}+\frac{7094794792}{16889065325}a^{17}-\frac{3643309639}{16889065325}a^{16}-\frac{2406688436}{3377813065}a^{15}+\frac{43937413262}{16889065325}a^{14}-\frac{100058423209}{16889065325}a^{13}+\frac{170153332097}{16889065325}a^{12}-\frac{50114388593}{3377813065}a^{11}+\frac{336326507916}{16889065325}a^{10}-\frac{35276770772}{1535369575}a^{9}+\frac{388019589237}{16889065325}a^{8}-\frac{356853459913}{16889065325}a^{7}+\frac{54136960971}{3377813065}a^{6}-\frac{17168189473}{1535369575}a^{5}+\frac{20003715994}{3377813065}a^{4}-\frac{26966076131}{16889065325}a^{3}+\frac{3037797028}{16889065325}a^{2}-\frac{5742606787}{16889065325}a-\frac{24023137647}{16889065325}$, $\frac{234573138}{3377813065}a^{22}-\frac{168101005}{675562613}a^{21}-\frac{3620846631}{16889065325}a^{20}+\frac{933318659}{675562613}a^{19}-\frac{30761491866}{16889065325}a^{18}+\frac{32219921809}{16889065325}a^{17}-\frac{7582812312}{16889065325}a^{16}-\frac{5058449178}{675562613}a^{15}+\frac{326995898751}{16889065325}a^{14}-\frac{23895550462}{675562613}a^{13}+\frac{944293810417}{16889065325}a^{12}-\frac{1233730788122}{16889065325}a^{11}+\frac{1433025610253}{16889065325}a^{10}-\frac{1498183900757}{16889065325}a^{9}+\frac{1157894608171}{16889065325}a^{8}-\frac{69418363918}{1535369575}a^{7}+\frac{412820509007}{16889065325}a^{6}-\frac{71627550227}{16889065325}a^{5}-\frac{12185731978}{1535369575}a^{4}+\frac{7519060944}{1535369575}a^{3}-\frac{121152684858}{16889065325}a^{2}-\frac{35779991239}{16889065325}a+\frac{13311409736}{16889065325}$, $\frac{550483487}{16889065325}a^{22}-\frac{148216973}{3377813065}a^{21}-\frac{2221153391}{16889065325}a^{20}+\frac{6358804132}{16889065325}a^{19}-\frac{6526310059}{16889065325}a^{18}+\frac{128621976}{456461225}a^{17}+\frac{8876523357}{16889065325}a^{16}-\frac{8803971624}{3377813065}a^{15}+\frac{90513711669}{16889065325}a^{14}-\frac{142196903141}{16889065325}a^{13}+\frac{38614140589}{3377813065}a^{12}-\frac{206664504487}{16889065325}a^{11}+\frac{195828095432}{16889065325}a^{10}-\frac{1271561378}{177779635}a^{9}-\frac{13799549336}{16889065325}a^{8}+\frac{27285865874}{3377813065}a^{7}-\frac{193171124758}{16889065325}a^{6}+\frac{228384578706}{16889065325}a^{5}-\frac{187895782933}{16889065325}a^{4}+\frac{4998830106}{675562613}a^{3}-\frac{39627791836}{16889065325}a^{2}-\frac{17963692497}{16889065325}a+\frac{20062533473}{16889065325}$, $\frac{532290973}{16889065325}a^{22}-\frac{516255218}{16889065325}a^{21}-\frac{2143291206}{16889065325}a^{20}+\frac{27990431}{91292245}a^{19}-\frac{5224213801}{16889065325}a^{18}+\frac{685984752}{3377813065}a^{17}+\frac{12076558}{24024275}a^{16}-\frac{3156303462}{1535369575}a^{15}+\frac{72318286418}{16889065325}a^{14}-\frac{114854421483}{16889065325}a^{13}+\frac{160550279063}{16889065325}a^{12}-\frac{195673287393}{16889065325}a^{11}+\frac{220436450213}{16889065325}a^{10}-\frac{199855214126}{16889065325}a^{9}+\frac{151298552249}{16889065325}a^{8}-\frac{20250524731}{3377813065}a^{7}+\frac{83891146796}{16889065325}a^{6}-\frac{64119126444}{16889065325}a^{5}+\frac{4568664274}{1535369575}a^{4}-\frac{32950079896}{16889065325}a^{3}+\frac{36005769313}{16889065325}a^{2}-\frac{24630951098}{16889065325}a+\frac{385111679}{1535369575}$, $\frac{89142651}{3377813065}a^{22}-\frac{2318319606}{16889065325}a^{21}-\frac{801230651}{16889065325}a^{20}+\frac{1165553954}{1535369575}a^{19}-\frac{17534375477}{16889065325}a^{18}+\frac{1301187567}{1535369575}a^{17}-\frac{4363437902}{16889065325}a^{16}-\frac{61691680929}{16889065325}a^{15}+\frac{169481486961}{16889065325}a^{14}-\frac{26996473348}{1535369575}a^{13}+\frac{93647457133}{3377813065}a^{12}-\frac{611749331399}{16889065325}a^{11}+\frac{702055487461}{16889065325}a^{10}-\frac{740695491746}{16889065325}a^{9}+\frac{570103624878}{16889065325}a^{8}-\frac{342227151461}{16889065325}a^{7}+\frac{39833145933}{3377813065}a^{6}-\frac{12128341778}{3377813065}a^{5}-\frac{41394807639}{16889065325}a^{4}+\frac{53145833441}{16889065325}a^{3}-\frac{59940211237}{16889065325}a^{2}+\frac{8881961412}{16889065325}a+\frac{14940317321}{16889065325}$, $\frac{762189006}{16889065325}a^{22}-\frac{437515987}{3377813065}a^{21}-\frac{63932214}{675562613}a^{20}+\frac{12404603601}{16889065325}a^{19}-\frac{564359427}{456461225}a^{18}+\frac{24207117064}{16889065325}a^{17}-\frac{6174497658}{16889065325}a^{16}-\frac{249176756}{61414783}a^{15}+\frac{199202350234}{16889065325}a^{14}-\frac{10426356099}{456461225}a^{13}+\frac{32402727536}{888898175}a^{12}-\frac{165388342727}{3377813065}a^{11}+\frac{993856695102}{16889065325}a^{10}-\frac{1049412987764}{16889065325}a^{9}+\frac{47349453281}{888898175}a^{8}-\frac{643275390506}{16889065325}a^{7}+\frac{74991964987}{3377813065}a^{6}-\frac{146215103966}{16889065325}a^{5}+\frac{4765085802}{3377813065}a^{4}+\frac{17745033338}{16889065325}a^{3}-\frac{31396188339}{16889065325}a^{2}-\frac{7422477559}{16889065325}a+\frac{7953930686}{16889065325}$, $\frac{2108968274}{16889065325}a^{22}-\frac{6874150726}{16889065325}a^{21}-\frac{697485867}{3377813065}a^{20}+\frac{39017827393}{16889065325}a^{19}-\frac{63885101187}{16889065325}a^{18}+\frac{68045806479}{16889065325}a^{17}-\frac{28995892252}{16889065325}a^{16}-\frac{188623022729}{16889065325}a^{15}+\frac{602436179921}{16889065325}a^{14}-\frac{230512267289}{3377813065}a^{13}+\frac{1880537761914}{16889065325}a^{12}-\frac{136873520653}{888898175}a^{11}+\frac{3140034680806}{16889065325}a^{10}-\frac{18396595881}{91292245}a^{9}+\frac{3009596243818}{16889065325}a^{8}-\frac{2178868485802}{16889065325}a^{7}+\frac{1444307788798}{16889065325}a^{6}-\frac{654995315152}{16889065325}a^{5}+\frac{34637598269}{16889065325}a^{4}+\frac{124584830654}{16889065325}a^{3}-\frac{5339619055}{675562613}a^{2}+\frac{7039542669}{3377813065}a+\frac{74605410799}{16889065325}$ Copy content Toggle raw display (assuming GRH)
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:  \( 1561186.27544 \) (assuming GRH)
sage: K.regulator()
 
gp: K.reg
 
magma: Regulator(K);
 
oscar: regulator(K)
 

Class number formula

\[ \begin{aligned}\lim_{s\to 1} (s-1)\zeta_K(s) =\mathstrut & \frac{2^{r_1}\cdot (2\pi)^{r_2}\cdot R\cdot h}{w\cdot\sqrt{|D|}}\cr \approx\mathstrut &\frac{2^{1}\cdot(2\pi)^{11}\cdot 1561186.27544 \cdot 1}{2\cdot\sqrt{8316624386164136054632388935703}}\cr\approx \mathstrut & 0.326181805972 \end{aligned}\] (assuming GRH)

# self-contained SageMath code snippet to compute the analytic class number formula
 
x = polygen(QQ); K.<a> = NumberField(x^23 - 2*x^22 - 3*x^21 + 13*x^20 - 19*x^19 + 21*x^18 - 75*x^16 + 202*x^15 - 378*x^14 + 596*x^13 - 798*x^12 + 955*x^11 - 995*x^10 + 849*x^9 - 610*x^8 + 384*x^7 - 151*x^6 + 2*x^5 + 46*x^4 - 37*x^3 + 3*x^2 + 20*x + 1)
 
DK = K.disc(); r1,r2 = K.signature(); RK = K.regulator(); RR = RK.parent()
 
hK = K.class_number(); wK = K.unit_group().torsion_generator().order();
 
2^r1 * (2*RR(pi))^r2 * RK * hK / (wK * RR(sqrt(abs(DK))))
 
# self-contained Pari/GP code snippet to compute the analytic class number formula
 
K = bnfinit(x^23 - 2*x^22 - 3*x^21 + 13*x^20 - 19*x^19 + 21*x^18 - 75*x^16 + 202*x^15 - 378*x^14 + 596*x^13 - 798*x^12 + 955*x^11 - 995*x^10 + 849*x^9 - 610*x^8 + 384*x^7 - 151*x^6 + 2*x^5 + 46*x^4 - 37*x^3 + 3*x^2 + 20*x + 1, 1);
 
[polcoeff (lfunrootres (lfuncreate (K))[1][1][2], -1), 2^K.r1 * (2*Pi)^K.r2 * K.reg * K.no / (K.tu[1] * sqrt (abs (K.disc)))]
 
/* self-contained Magma code snippet to compute the analytic class number formula */
 
Qx<x> := PolynomialRing(QQ); K<a> := NumberField(x^23 - 2*x^22 - 3*x^21 + 13*x^20 - 19*x^19 + 21*x^18 - 75*x^16 + 202*x^15 - 378*x^14 + 596*x^13 - 798*x^12 + 955*x^11 - 995*x^10 + 849*x^9 - 610*x^8 + 384*x^7 - 151*x^6 + 2*x^5 + 46*x^4 - 37*x^3 + 3*x^2 + 20*x + 1);
 
OK := Integers(K); DK := Discriminant(OK);
 
UK, fUK := UnitGroup(OK); clK, fclK := ClassGroup(OK);
 
r1,r2 := Signature(K); RK := Regulator(K); RR := Parent(RK);
 
hK := #clK; wK := #TorsionSubgroup(UK);
 
2^r1 * (2*Pi(RR))^r2 * RK * hK / (wK * Sqrt(RR!Abs(DK)));
 
# self-contained Oscar code snippet to compute the analytic class number formula
 
Qx, x = PolynomialRing(QQ); K, a = NumberField(x^23 - 2*x^22 - 3*x^21 + 13*x^20 - 19*x^19 + 21*x^18 - 75*x^16 + 202*x^15 - 378*x^14 + 596*x^13 - 798*x^12 + 955*x^11 - 995*x^10 + 849*x^9 - 610*x^8 + 384*x^7 - 151*x^6 + 2*x^5 + 46*x^4 - 37*x^3 + 3*x^2 + 20*x + 1);
 
OK = ring_of_integers(K); DK = discriminant(OK);
 
UK, fUK = unit_group(OK); clK, fclK = class_group(OK);
 
r1,r2 = signature(K); RK = regulator(K); RR = parent(RK);
 
hK = order(clK); wK = torsion_units_order(K);
 
2^r1 * (2*pi)^r2 * RK * hK / (wK * sqrt(RR(abs(DK))))
 

Galois group

$D_{23}$ (as 23T2):

sage: K.galois_group(type='pari')
 
gp: polgalois(K.pol)
 
magma: G = GaloisGroup(K);
 
oscar: G, Gtx = galois_group(K); G, transitive_group_identification(G)
 
A solvable group of order 46
The 13 conjugacy class representatives for $D_{23}$
Character table for $D_{23}$

Intermediate fields

The extension is primitive: there are no intermediate fields between this field and $\Q$.
sage: K.subfields()[1:-1]
 
gp: L = nfsubfields(K); L[2..length(b)]
 
magma: L := Subfields(K); L[2..#L];
 
oscar: subfields(K)[2:end-1]
 

Sibling fields

Galois closure: 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 $23$ $23$ ${\href{/padicField/5.2.0.1}{2} }^{11}{,}\,{\href{/padicField/5.1.0.1}{1} }$ $23$ ${\href{/padicField/11.2.0.1}{2} }^{11}{,}\,{\href{/padicField/11.1.0.1}{1} }$ $23$ $23$ ${\href{/padicField/19.2.0.1}{2} }^{11}{,}\,{\href{/padicField/19.1.0.1}{1} }$ ${\href{/padicField/23.2.0.1}{2} }^{11}{,}\,{\href{/padicField/23.1.0.1}{1} }$ $23$ $23$ ${\href{/padicField/37.2.0.1}{2} }^{11}{,}\,{\href{/padicField/37.1.0.1}{1} }$ $23$ $23$ ${\href{/padicField/47.2.0.1}{2} }^{11}{,}\,{\href{/padicField/47.1.0.1}{1} }$ $23$ ${\href{/padicField/59.2.0.1}{2} }^{11}{,}\,{\href{/padicField/59.1.0.1}{1} }$

Cycle lengths which are repeated in a cycle type are indicated by exponents.

# to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ for $p=7$ in Sage:
 
p = 7; [(e, pr.norm().valuation(p)) for pr,e in K.factor(p)]
 
\\ to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ for $p=7$ in Pari:
 
p = 7; pfac = idealprimedec(K, p); vector(length(pfac), j, [pfac[j][3], pfac[j][4]])
 
// to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ for $p=7 in Magma:
 
p := 7; [<pr[2], Valuation(Norm(pr[1]), p)> : pr in Factorization(p*Integers(K))];
 
# to obtain a list of $[e_i,f_i]$ for the factorization of the ideal $p\mathcal{O}_K$ for $p=7$ in Oscar:
 
p = 7; pfac = factor(ideal(ring_of_integers(K), p)); [(e, valuation(norm(pr),p)) for (pr,e) in pfac]
 

Local algebras for ramified primes

$p$LabelPolynomial $e$ $f$ $c$ Galois group Slope content
\(647\) Copy content Toggle raw display $\Q_{647}$$x$$1$$1$$0$Trivial$[\ ]$
Deg $2$$2$$1$$1$$C_2$$[\ ]_{2}$
Deg $2$$2$$1$$1$$C_2$$[\ ]_{2}$
Deg $2$$2$$1$$1$$C_2$$[\ ]_{2}$
Deg $2$$2$$1$$1$$C_2$$[\ ]_{2}$
Deg $2$$2$$1$$1$$C_2$$[\ ]_{2}$
Deg $2$$2$$1$$1$$C_2$$[\ ]_{2}$
Deg $2$$2$$1$$1$$C_2$$[\ ]_{2}$
Deg $2$$2$$1$$1$$C_2$$[\ ]_{2}$
Deg $2$$2$$1$$1$$C_2$$[\ ]_{2}$
Deg $2$$2$$1$$1$$C_2$$[\ ]_{2}$
Deg $2$$2$$1$$1$$C_2$$[\ ]_{2}$