Finite Group Databasebeta
Cayley diagram

C2×#2491 #34759

order256
nilpotency class2
isoclinismisoclinic class of #2403
automorphismAut(G) order 1048576
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C28×C4

Aliases

direct productC2×#2491

Subgroups

subgroupG/H
center, socleC24C24
commutator, Frattini, cosocleC23C25
prime radicalC22×#121C2
LCSG ▷ C23 ▷ C1
UCSC1 ◁ C24 ◁ G
LECSG ▷ C23 ▷ C1

1839 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)(7,8,9,10)(12,15)(13,17);(3,4,6,5)(7,8,9,10)(11,12)(13,16)(14,15)(17,18);(7,8)(9,10)(11,12)(13,16)(14,15)(17,18);(3,5,6,4)(11,13,14,17)(12,16,15,18)

Conjugacy classes & character table

76 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#97394, #97599, #98537, …
maximal normal subgroup of#97394, #97599, #98537, …
maximal quotient ofC2×#13876, C2×#13918, C2×#13994, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 27747);