Finite Group Databasebeta
Cayley diagram

C2×#2440 #34674

order256
nilpotency class2
isoclinismisoclinic class of #2403
automorphismAut(G) order 1048576
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C29

Aliases

direct productC2×#2440

Subgroups

subgroupG/H
center, socleC24C24
commutator, Frattini, cosocleC23C25
prime radicalC25C23
LCSG ▷ C23 ▷ C1
UCSC1 ◁ C24 ◁ G
LECSG ▷ C23 ▷ C1

1775 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 18
transitive degreeμt(G) = 128

A minimal faithful permutation representation — 5 generators on 18 points:

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

Conjugacy classes & character table

76 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#98532, #98552, #122058, …
maximal normal subgroup of#98532, #98552, #122058, …
maximal quotient ofC2×#13880, C2×#13907, C2×#13981, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 27662);