Finite Group Databasebeta
Cayley diagram

C2×#2395 #34542

order256
nilpotency class2
isoclinismisoclinic class of #392
automorphismAut(G) order 1048576
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C28

Aliases

direct productC2×#2395

Subgroups

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

1591 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)(9,12)(10,11)(13,14)(15,16)(17,19)(18,20)(21,22);(3,4)(5,6)(8,11)(12,14)(15,17,18,21)(16,19,20,22);(4,6)(16,20)(19,22);(7,9,10,13)(8,12,11,14)

Conjugacy classes & character table

88 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#115156, #129855, #129863, …
maximal normal subgroup of#115156, #129855, #129863, …
maximal quotient ofC2×#13839, C2×#13842, C2×#13844, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 27530);