Finite Group Databasebeta
Cayley diagram

C2×#1742 #20357

order256
nilpotency class3
isoclinismisoclinic class of #99
automorphismAut(G) order 262144
homologyAbelianization (H1) = C22×C42 · Schur multiplier (H2) = C27

Aliases

direct productC2×#1742

Subgroups

subgroupG/H
centerC22×C4C22⋊C4
commutatorC22C22×C42
Frattini, cosocleC22×C4C24
socleC23C2×C22⋊C4
prime radicalC25C2×C4
LCSG ▷ C22 ▷ C2 ▷ C1
UCSC1 ◁ C22×C4 ◁ C24×C4 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

1095 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 22
transitive degreeμt(G) = 64

A minimal faithful permutation representation — 4 generators on 22 points:

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

Conjugacy classes & character table

88 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#123441, #123442, #123446, …
maximal normal subgroup of#123441, #123442, #123446, …
maximal quotient ofC2×#7906, C2×#7907, #180998, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 13345);