Finite Group Databasebeta
Cayley diagram

C2×#2659 #34572

order256
nilpotency class2
isoclinismisoclinic class of #2613
automorphismAut(G) order 4194304
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C28

Aliases

direct productC2×#2659

Subgroups

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

1491 conjugacy classes of subgroups; only the 607 normal subgroups are shown.

normal subgroups only

This group has 1491 conjugacy classes of subgroups — too many to draw. Only its 607 normal subgroups are shown.

Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.

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

Conjugacy classes & character table

64 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#111268, #112271, #122017, …
maximal normal subgroup of#111268, #112271, #122017, …
maximal quotient ofC2×#14275, C2×#14281, C2×#14327, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 27560);