Finite Group Databasebeta
Cayley diagram

C2×#1975 #21239

order256
nilpotency class3
isoclinismisoclinic class of #468
automorphismAut(G) order 65536
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C25×C4

Aliases

direct productC2×#1975

Subgroups

subgroupG/H
centerC22×C4C2×D4
commutatorC2×C4C23×C4
Frattini, cosocleC22×C4C24
socleC23C4×D4
prime radicalC22×#135C2
LCSG ▷ C2×C4 ▷ C2 ▷ C1
UCSC1 ◁ C22×C4 ◁ C23×C8 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

759 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);(4,6)(7,8,11,15,12,16,10,13)(9,17,20,22,18,21,19,14);(3,4,5,6)(8,13,16,15)(9,18)(14,17,22,21)(19,20);(7,9,10,19,12,18,11,20)(8,14,15,17,16,22,13,21)

Conjugacy classes & character table

64 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC2×#7109, #147430, #147431, …
maximal normal subgroup ofC2×#7109, #147430, #147431, …
maximal quotient ofC2×#9658, C2×#9659, C2×#9660, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 14227);