Finite Group Databasebeta
Cayley diagram

C2×#1616 #18116

order256
nilpotency class3
isoclinismisoclinic class of #1595
automorphismAut(G) order 32768
homologyAbelianization (H1) = C24 · Schur multiplier (H2) = C26

Aliases

direct productC2×#1616

Subgroups

subgroupG/H
center, socleC23#120
commutator, Frattini, cosocleC22×C4C24
prime radicalC2×#537C2
LCSG ▷ C22×C4 ▷ C22 ▷ C1
UCSC1 ◁ C23 ◁ C23×C4 ◁ G
LECSG ▷ C22×C4 ▷ C22 ▷ C1

632 conjugacy classes of subgroups; only the 135 normal subgroups are shown.

normal subgroups only

This group has 632 conjugacy classes of subgroups — too many to draw. Only its 135 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);(3,4,6,9)(5,7,10,8)(11,12,15,18)(13,16,20,23)(14,17,21,24)(19,25,26,22);(4,7)(5,10)(8,9)(11,13)(12,16)(14,19)(15,20)(17,22)(18,23)(21,26)(24,25);(11,14,15,21)(12,17,18,24)(13,19,20,26)(16,22,23,25)

Conjugacy classes & character table

46 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#137404, #137406, #137423, …
maximal normal subgroup of#137404, #137406, #137423, …
maximal quotient ofC2×#7791, C2×#7795, C2×#7825, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 11104);