Finite Group Databasebeta

D7680 #72212908

order15360
automorphismAut(G) order 15728640
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD7680

Splittings

FittingC3×C5×C512 ⋊ C2
HallC3×C5 ⋊ D512
SylowC5 ⋊ D1536
SylowC3 ⋊ D2560

Subgroups

subgroupG/H
centerC2D3840
commutator, cosocleC3×C5×C256C22
FrattiniC256C2×D15
FittingC3×C5×C512C2
socleC2×C3×C5D256
hypercenterC512D15
hypocenterC3×C5D512
LCSG ▷ C3×C5×C256 ▷ C3×C5×C128 ▷ C3×C5×C64 ▷ C3×C5×C32 ▷ C3×C5×C16 ▷ C3×C5×C8 ▷ C3×C4×C5 ▷ C2×C3×C5 ▷ C3×C5
UCSC1 ◁ C2 ◁ C4 ◁ C8 ◁ C16 ◁ C32 ◁ C64 ◁ C128 ◁ C256 ◁ C512

116 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 520
transitive degreeμt(G) = 7680

A minimal faithful permutation representation — 2 generators on 520 points:

(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308,309,310,311,312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,330,331,332,333,334,335,336,337,338,339,340,341,342,343,344,345,346,347,348,349,350,351,352,353,354,355,356,357,358,359,360,361,362,363,364,365,366,367,368,369,370,371,372,373,374,375,376,377,378,379,380,381,382,383,384,385,386,387,388,389,390,391,392,393,394,395,396,397,398,399,400,401,402,403,404,405,406,407,408,409,410,411,412,413,414,415,416,417,418,419,420,421,422,423,424,425,426,427,428,429,430,431,432,433,434,435,436,437,438,439,440,441,442,443,444,445,446,447,448,449,450,451,452,453,454,455,456,457,458,459,460,461,462,463,464,465,466,467,468,469,470,471,472,473,474,475,476,477,478,479,480,481,482,483,484,485,486,487,488,489,490,491,492,493,494,495,496,497,498,499,500,501,502,503,504,505,506,507,508,509,510,511,512)(513,514,515)(516,517,518,519,520);(2,512)(3,511)(4,510)(5,509)(6,508)(7,507)(8,506)(9,505)(10,504)(11,503)(12,502)(13,501)(14,500)(15,499)(16,498)(17,497)(18,496)(19,495)(20,494)(21,493)(22,492)(23,491)(24,490)(25,489)(26,488)(27,487)(28,486)(29,485)(30,484)(31,483)(32,482)(33,481)(34,480)(35,479)(36,478)(37,477)(38,476)(39,475)(40,474)(41,473)(42,472)(43,471)(44,470)(45,469)(46,468)(47,467)(48,466)(49,465)(50,464)(51,463)(52,462)(53,461)(54,460)(55,459)(56,458)(57,457)(58,456)(59,455)(60,454)(61,453)(62,452)(63,451)(64,450)(65,449)(66,448)(67,447)(68,446)(69,445)(70,444)(71,443)(72,442)(73,441)(74,440)(75,439)(76,438)(77,437)(78,436)(79,435)(80,434)(81,433)(82,432)(83,431)(84,430)(85,429)(86,428)(87,427)(88,426)(89,425)(90,424)(91,423)(92,422)(93,421)(94,420)(95,419)(96,418)(97,417)(98,416)(99,415)(100,414)(101,413)(102,412)(103,411)(104,410)(105,409)(106,408)(107,407)(108,406)(109,405)(110,404)(111,403)(112,402)(113,401)(114,400)(115,399)(116,398)(117,397)(118,396)(119,395)(120,394)(121,393)(122,392)(123,391)(124,390)(125,389)(126,388)(127,387)(128,386)(129,385)(130,384)(131,383)(132,382)(133,381)(134,380)(135,379)(136,378)(137,377)(138,376)(139,375)(140,374)(141,373)(142,372)(143,371)(144,370)(145,369)(146,368)(147,367)(148,366)(149,365)(150,364)(151,363)(152,362)(153,361)(154,360)(155,359)(156,358)(157,357)(158,356)(159,355)(160,354)(161,353)(162,352)(163,351)(164,350)(165,349)(166,348)(167,347)(168,346)(169,345)(170,344)(171,343)(172,342)(173,341)(174,340)(175,339)(176,338)(177,337)(178,336)(179,335)(180,334)(181,333)(182,332)(183,331)(184,330)(185,329)(186,328)(187,327)(188,326)(189,325)(190,324)(191,323)(192,322)(193,321)(194,320)(195,319)(196,318)(197,317)(198,316)(199,315)(200,314)(201,313)(202,312)(203,311)(204,310)(205,309)(206,308)(207,307)(208,306)(209,305)(210,304)(211,303)(212,302)(213,301)(214,300)(215,299)(216,298)(217,297)(218,296)(219,295)(220,294)(221,293)(222,292)(223,291)(224,290)(225,289)(226,288)(227,287)(228,286)(229,285)(230,284)(231,283)(232,282)(233,281)(234,280)(235,279)(236,278)(237,277)(238,276)(239,275)(240,274)(241,273)(242,272)(243,271)(244,270)(245,269)(246,268)(247,267)(248,266)(249,265)(250,264)(251,263)(252,262)(253,261)(254,260)(255,259)(256,258)(514,515)(517,520)(518,519)

Polycyclic presentation:

2^10,3,5|b^2=cd,c^2=de,d^2=ef,e^2=fg,f^2=gh,g^2=hi,h^2=ij,i^2=j,b^a=bc,c^a=cd,d^a=de,e^a=ef,f^a=fg,g^a=gh,h^a=hi,i^a=ij,k^a=k^2,l^a=l^4

Conjugacy classes & character table

3843 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD15360, D23040
maximal normal subgroup ofD15360
maximal quotient ofD15360, Dic7680, D23040

GAP

Past the SmallGroups library coverage — no SmallGroups id. Construct it from its polycyclic presentation:

gap> F := FreeGroup(IsSyllableWordsFamily, "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l");;
gap> coll := SingleCollector(F, [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 5]);;
gap> SetPower(coll, 2, F.3*F.4);;
gap> SetPower(coll, 3, F.4*F.5);;
gap> SetPower(coll, 4, F.5*F.6);;
gap> SetPower(coll, 5, F.6*F.7);;
gap> SetPower(coll, 6, F.7*F.8);;
gap> SetPower(coll, 7, F.8*F.9);;
gap> SetPower(coll, 8, F.9*F.10);;
gap> SetPower(coll, 9, F.10);;
gap> SetConjugate(coll, 2, 1, F.2*F.3);;
gap> SetConjugate(coll, 3, 1, F.3*F.4);;
gap> SetConjugate(coll, 4, 1, F.4*F.5);;
gap> SetConjugate(coll, 5, 1, F.5*F.6);;
gap> SetConjugate(coll, 6, 1, F.6*F.7);;
gap> SetConjugate(coll, 7, 1, F.7*F.8);;
gap> SetConjugate(coll, 8, 1, F.8*F.9);;
gap> SetConjugate(coll, 9, 1, F.9*F.10);;
gap> SetConjugate(coll, 11, 1, F.11^2);;
gap> SetConjugate(coll, 12, 1, F.12^4);;
gap> UpdatePolycyclicCollector(coll);;
gap> G := GroupByRws(coll);