Finite Group Databasebeta
Cayley diagram

C2×#499 #3158

order128
nilpotency class3
isoclinismisoclinic class of #465
automorphismAut(G) order 32768
homologyAbelianization (H1) = C24 · Schur multiplier (H2) = C24

Aliases

direct productC2×#499

Subgroups

subgroupG/H
center, socle, prime radicalC23C2×D4
commutator, Frattini, cosocleC2×C4C24
LCSG ▷ C2×C4 ▷ C2 ▷ C1
UCSC1 ◁ C23 ◁ C2×C42 ◁ G
LECSG ▷ C2×C4 ▷ C2 ▷ C1

180 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 26
transitive degreeμt(G) = 128

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

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

Conjugacy classes & character table

44 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#9788, #9792, C2×#1363, …
maximal normal subgroup of#9788, #9792, C2×#1363, …
maximal quotient ofC2×#1846, C2×#1941, C2×#1942, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 1890);