Finite Group Databasebeta

D7644 #72212840

order15288
automorphismAut(G) order 15410304
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD7644

Splittings

FittingC3×C4×C13×C49 ⋊ C2
HallC3×C13×C49 ⋊ D4
HallC13×C49 ⋊ D12
HallC3×C49 ⋊ D52
SylowC49 ⋊ D156
HallC3×C13 ⋊ D196
SylowC13 ⋊ D588
SylowC3 ⋊ D2548

Subgroups

subgroupG/H
centerC2C2×D1911
commutator, cosocleC2×C3×C13×C49C22
FrattiniC2×C7C2×D273
FittingC3×C4×C13×C49C2
socleC2×C3×C7×C13C2×D7
hypercenterC4D1911
hypocenterC3×C13×C49D4
LCSG ▷ C2×C3×C13×C49 ▷ C3×C13×C49
UCSC1 ◁ C2 ◁ C4

96 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 69
transitive degreeμt(G) = 7644

A minimal faithful permutation representation — 2 generators on 69 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);(2,4)(6,7)(9,56)(10,55)(11,54)(12,53)(13,52)(14,51)(15,50)(16,49)(17,48)(18,47)(19,46)(20,45)(21,44)(22,43)(23,42)(24,41)(25,40)(26,39)(27,38)(28,37)(29,36)(30,35)(31,34)(32,33)(58,69)(59,68)(60,67)(61,66)(62,65)(63,64)

Polycyclic presentation:

2^3,3,7,13,7|b^2=c,e^7=g,b^a=bc,d^a=d^2,e^a=e^6g^6,f^a=f^12,g^a=g^6

Conjugacy classes & character table

3825 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD15288, D22932
maximal normal subgroup ofD15288
maximal quotient ofD15288, Dic7644, D22932

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");;
gap> coll := SingleCollector(F, [2, 2, 2, 3, 7, 13, 7]);;
gap> SetPower(coll, 2, F.3);;
gap> SetPower(coll, 5, F.7);;
gap> SetConjugate(coll, 2, 1, F.2*F.3);;
gap> SetConjugate(coll, 4, 1, F.4^2);;
gap> SetConjugate(coll, 5, 1, F.5^6*F.7^6);;
gap> SetConjugate(coll, 6, 1, F.6^12);;
gap> SetConjugate(coll, 7, 1, F.7^6);;
gap> UpdatePolycyclicCollector(coll);;
gap> G := GroupByRws(coll);