Finite Group Databasebeta
Cayley diagram

C2×#2245 #33700

order256
nilpotency class4
isoclinismisoclinic class of #2218
automorphismAut(G) order 131072
homologyAbelianization (H1) = C24 · Schur multiplier (H2) = C23×C4

Aliases

direct productC2×#2245

Subgroups

subgroupG/H
center, socle, prime radicalC23C2×D8
commutator, Frattini, cosocleC2×C8C24
LCSG ▷ C2×C8 ▷ C4 ▷ C2 ▷ C1
UCSC1 ◁ C23 ◁ C2×C42 ◁ C2×C4×C8 ◁ G
LECSG ▷ C2×C8 ▷ C4 ▷ C2 ▷ C1

291 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 42
transitive degreeμt(G) = 256

A minimal faithful permutation representation — 4 generators on 42 points:

(1,2);(3,4)(5,8)(6,7)(9,10)(11,12,18,24)(13,20,28,39)(14,19,30,37)(15,22,32,34)(16,21,25,40)(17,33,31,23)(26,38,41,36)(27,42,29,35);(4,7)(8,10)(11,13,25,41,17,27,15,14,18,28,16,26,31,29,32,30)(12,19,34,42,23,36,21,20,24,37,22,35,33,38,40,39);(3,5,6,9)(4,8,7,10)(11,14,15,29,31,41,25,28,18,30,32,27,17,26,16,13)(12,20,21,38,33,42,34,37,24,39,40,36,23,35,22,19)

Conjugacy classes & character table

52 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#137571, #141268, #141551, …
maximal normal subgroup of#137571, #141268, #141551, …
maximal quotient ofC2×#12890, C2×#13150, C2×#13207, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 26688);