Finite Group Databasebeta
Cayley diagram

(C2×D9)⋊C8 #63379

order288
isoclinismisoclinic class of Dic18
automorphismAut(G) = C25×AGL(1,ℤ/9) (order 1728) · Inn(G) = C2×D9 · Out(G) = C24×C3
homologyAbelianization (H1) = C2×C8 · Schur multiplier (H2) = C22

Aliases

unambiguous semidirect product(C2×D9)⋊C8

Splittings

FittingC2×C8×C9 ⋊ C2
SylowC9 ⋊ C22⋊C8

Subgroups

subgroupG/H
centerC2×C4C2×D9
commutatorC2×C9C2×C8
FrattiniC2×C3×C4C2×D3
FittingC2×C8×C9C2
socleC22×C3C4×D3
prime radicalC22×D9C4
cosocleC2×C4×C9C22
hypercenterC2×C8D9
hypocenterC9C22⋊C8
LCSG ▷ C2×C9 ▷ C9
UCSC1 ◁ C2×C4 ◁ C2×C8

75 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 21
transitive degreeμt(G) = 144

A minimal faithful permutation representation — 2 generators on 21 points:

(1,6,8,7,2,4,3,9,5)(11,13)(14,15,16,18,17,19,20,21);(2,4)(3,7)(5,6)(8,9)(10,11)(12,13)

Polycyclic presentation:

2^5,3^2|b^2=c,c^2=e,f^3=g^2,b^a=bd,f^a=f^2g,g^a=g^2

Conjugacy classes & character table

84 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#10588367, C8×D36, #10588370, …
maximal normal subgroup of#10588367, C8×D36, #10588370, …
maximal quotient of#10588133, #10588136, #10588145, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(288, 27);