Finite Group Databasebeta

D868 #13181925

order1736
automorphismAut(G) order 312480
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD868
unambiguous semidirect productC4⋊D217

Splittings

FittingC4×C7×C31 ⋊ C2
HallC7×C31 ⋊ D4
SylowC31 ⋊ D28
SylowC7 ⋊ D124

Subgroups

subgroupG/H
center, FrattiniC2C2×D217
commutator, socle, cosocleC2×C7×C31C22
FittingC4×C7×C31C2
hypercenterC4D217
hypocenterC7×C31D4
LCSG ▷ C2×C7×C31 ▷ C7×C31
UCSC1 ◁ C2 ◁ C4

32 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 42
transitive degreeμt(G) = 868

A minimal faithful permutation representation — 2 generators on 42 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);(2,4)(6,11)(7,10)(8,9)(13,42)(14,41)(15,40)(16,39)(17,38)(18,37)(19,36)(20,35)(21,34)(22,33)(23,32)(24,31)(25,30)(26,29)(27,28)

Polycyclic presentation:

2^3,7,31|b^2=c,b^a=bc,d^a=d^6,e^a=e^30

Conjugacy classes & character table

437 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD2604, D1736, D4340, …
maximal normal subgroup ofD1736
maximal quotient ofD2604, D1736, Dic868, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1736, 24);