Finite Group Databasebeta
Cayley diagram

C2×#1945 #21161

order256
nilpotency class3
isoclinismisoclinic class of #465
automorphismAut(G) order 65536
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C25

Aliases

direct productC2×#1945

Subgroups

subgroupG/H
centerC22×C4C2×D4
commutatorC2×C4C23×C4
Frattini, cosocleC22×C4C24
socleC23C4×D4
prime radicalC24#41
LCSG ▷ C2×C4 ▷ C2 ▷ C1
UCSC1 ◁ C22×C4 ◁ C23×C8 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

487 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);(3,4)(5,6)(7,8,12,16,13,17,11,21)(9,14,18,22,19,15,10,20);(4,6)(7,9,12,18,13,19,11,10)(8,14,16,22,17,15,21,20);(7,10,11,19,13,18,12,9)(8,15,16,20,17,14,21,22)

Conjugacy classes & character table

88 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC2×#7119, #124080, #124270, …
maximal normal subgroup ofC2×#7119, #124080, #124270, …
maximal quotient ofC2×#9593, C2×#9594, #203498, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 14149);