Finite Group Databasebeta
Cayley diagram

C2×#2498 #34805

order256
nilpotency class2
isoclinismisoclinic class of #2403
automorphismAut(G) order 1048576
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C28

Aliases

direct productC2×#2498

Subgroups

subgroupG/H
center, socleC24C24
commutator, Frattini, cosocleC23C25
prime radicalC23×D4C22
LCSG ▷ C23 ▷ C1
UCSC1 ◁ C24 ◁ G
LECSG ▷ C23 ▷ C1

1557 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);(4,6)(8,9)(10,14)(15,16,19,21)(17,18,22,20);(7,8,11,9)(10,12,14,13)(15,17,19,22)(16,20,21,18);(3,4,5,6)(7,9,11,8)(10,13,14,12)(15,17)(16,18)(19,22)(20,21);(7,10)(8,12)(9,13)(11,14)(15,18)(16,17)(19,20)(21,22)

Conjugacy classes & character table

76 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#115311, #133135, #133141, …
maximal normal subgroup of#115311, #133135, #133141, …
maximal quotient ofC2×#13878, C2×#13958, C2×#13999, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 27793);