Finite Group Databasebeta
Cayley diagram

C2×#1815 #20676

order256
nilpotency class3
isoclinismisoclinic class of #471
automorphismAut(G) order 65536
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C26

Aliases

direct productC2×#1815

Subgroups

subgroupG/H
center, socleC23#121
commutatorC2×C4C23×C4
Frattini, cosocleC22×C4C24
prime radicalC22×#41C22
LCSG ▷ C2×C4 ▷ C2 ▷ C1
UCSC1 ◁ C23 ◁ C23×C4 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

687 conjugacy classes of subgroups.

Full subgroup data →

Presentation

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

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

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

Conjugacy classes & character table

64 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#146438, #146455, #146554, …
maximal normal subgroup of#146438, #146455, #146554, …
maximal quotient ofC2×#8604, C2×#8607, #188787, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 13664);