Finite Group Databasebeta
Cayley diagram

C2×#2355 #34118

order256
nilpotency class2
isoclinismisoclinic class of D42
automorphismAut(G) order 2097152
homologyAbelianization (H1) = C24×C4 · Schur multiplier (H2) = C27×C4

Aliases

direct productC2×#2355

Subgroups

subgroupG/H
center, socle, prime radicalC24C24
commutatorC22C24×C4
Frattini, cosocleC23C25
LCSG ▷ C22 ▷ C1
UCSC1 ◁ C24 ◁ G
LECSG ▷ C23 ▷ C1

1319 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 22
transitive degreeμt(G) = 256

A minimal faithful permutation representation — 5 generators on 22 points:

(1,2);(3,4,5,6)(7,8,11,10)(9,13,14,12)(16,19)(20,21);(8,10)(12,13)(15,16,18,19)(17,21,22,20);(7,9,11,14)(8,12,10,13);(7,10,11,8)(9,13,14,12)(15,17,18,22)(16,20,19,21)

Conjugacy classes & character table

100 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#97579, #105993, #106717, …
maximal normal subgroup of#97579, #105993, #106717, …
maximal quotient ofC2×C4⋊C42, C2×#13804, C2×#13812, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 27106);