Finite Group Databasebeta
Cayley diagram

C2×#1553 #17711

order256
nilpotency class3
isoclinismisoclinic class of #1504
automorphismAut(G) order 65536
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C24×C4

Aliases

direct productC2×#1553

Subgroups

subgroupG/H
center, socleC23C2×C22⋊C4
commutatorC2×C4C23×C4
Frattini, cosocleC42C24
prime radicalC2×#532C2
LCSG ▷ C2×C4 ▷ C22 ▷ C1
UCSC1 ◁ C23 ◁ C22×C42 ◁ G
LECSG ▷ C42 ▷ C22 ▷ C1

627 conjugacy classes of subgroups; only the 199 normal subgroups are shown.

normal subgroups only

This group has 627 conjugacy classes of subgroups — too many to draw. Only its 199 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) = 26
transitive degreeμt(G) = 128

A minimal faithful permutation representation — 4 generators on 26 points:

(1,2);(3,4)(5,7)(6,8)(9,10)(11,12,15,18,16,19,14,23)(13,20,21,25,22,17,24,26);(4,7)(5,10)(8,9)(11,13)(12,17)(14,21)(15,24)(16,22)(18,25)(19,20)(23,26);(4,8)(7,9)(11,14,16,15)(12,18,19,23)(13,21,22,24)(17,25,20,26)

Conjugacy classes & character table

64 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#107457, #107614, #107639, …
maximal normal subgroup of#107457, #107614, #107639, …
maximal quotient ofC2×#7580, C2×#7582, #160502, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 10699);