Finite Group Databasebeta
Cayley diagram

C2×#1659 #18979

order256
nilpotency class3
isoclinismisoclinic class of #1655
automorphismAut(G) order 32768
homologyAbelianization (H1) = C24 · Schur multiplier (H2) = C24×C4

Aliases

direct productC2×#1659

Subgroups

subgroupG/H
center, socleC23#120
commutator, Frattini, cosocleC42C24
prime radicalC2×H(3,𝔽4)C2
LCSG ▷ C42 ▷ C22 ▷ C1
UCSC1 ◁ C23 ◁ C2×C42 ◁ G
LECSG ▷ C42 ▷ C22 ▷ C1

575 conjugacy classes of subgroups; only the 119 normal subgroups are shown.

normal subgroups only

This group has 575 conjugacy classes of subgroups — too many to draw. Only its 119 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) = 64

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

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

Conjugacy classes & character table

40 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#152576, #153161, #153165, …
maximal normal subgroup of#152576, #153161, #153165, …
maximal quotient ofC2×#7750, C2×#7786, C2×#7758, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 11967);