Finite Group Databasebeta

D7839 #30627890

order15678
automorphism?
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD7839
unambiguous semidirect productC9⋊D871
unambiguous semidirect productC13⋊D603
unambiguous semidirect productC67⋊D117

Splittings

Fitting, derived, HallC9×C13×C67 ⋊ C2
HallC13×C67 ⋊ D9
HallC9×C67 ⋊ D13
HallC9×C13 ⋊ D67
SylowC67 ⋊ D117
SylowC13 ⋊ D603
SylowC9 ⋊ D871

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC9×C13×C67C2
FrattiniC3D2613
socleC3×C13×C67D3
LCSG ▷ C9×C13×C67
UCSC1

24 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 89
transitive degreeμt(G) = 7839

A minimal faithful permutation representation — 2 generators on 89 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);(2,9)(3,8)(4,7)(5,6)(11,22)(12,21)(13,20)(14,19)(15,18)(16,17)(24,89)(25,88)(26,87)(27,86)(28,85)(29,84)(30,83)(31,82)(32,81)(33,80)(34,79)(35,78)(36,77)(37,76)(38,75)(39,74)(40,73)(41,72)(42,71)(43,70)(44,69)(45,68)(46,67)(47,66)(48,65)(49,64)(50,63)(51,62)(52,61)(53,60)(54,59)(55,58)(56,57)

Polycyclic presentation:

2,3,13,67,3|b^3=e^2,b^a=b^2e,c^a=c^12,d^a=d^66,e^a=e^2

Conjugacy classes & character table

3921 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD67×D117, D13×D603, D9×D871, …
maximal normal subgroup ofD67×D117, D13×D603, D9×D871, …
maximal quotient ofDic7839, C2×D7839, D23517

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(15678, 12);