Finite Group Databasebeta
Cayley diagram

C2×#2398 #34545

order256
nilpotency class2
isoclinismisoclinic class of #392
automorphismAut(G) order 2097152
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C29

Aliases

direct productC2×#2398

Subgroups

subgroupG/H
centerC23×C4C23
commutator, Frattini, cosocleC23C25
socleC24C24
prime radicalC23×D4C22
LCSG ▷ C23 ▷ C1
UCSC1 ◁ C23×C4 ◁ G
LECSG ▷ C23 ▷ C1

1623 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 22
transitive degreeμt(G) = 128

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

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

Conjugacy classes & character table

88 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#111496, #115160, #115161, …
maximal normal subgroup of#111496, #115160, #115161, …
maximal quotient ofC2×#13842, C2×#13847, C2×#13850, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 27533);