Finite Group Databasebeta
Cayley diagram

C2×#491 #3134

order128
nilpotency class3
isoclinismisoclinic class of #468
automorphismAut(G) order 32768
homologyAbelianization (H1) = C24 · Schur multiplier (H2) = C23×C4

Aliases

direct productC2×#491

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

192 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)(5,8)(6,7)(9,10)(11,12,17,22)(13,19,24,25)(14,18,23,26)(15,21,16,20);(4,7)(8,10)(11,13,15,14,17,24,16,23)(12,18,20,19,22,26,21,25);(3,5,6,9)(4,8,7,10)(11,14,15,24,17,23,16,13)(12,19,20,26,22,25,21,18)

Conjugacy classes & character table

32 conjugacy classes — view the full character table.

Relationships

Frattini subgroup of#94785
maximal subgroup of#9004, #10083, #10084, …
maximal normal subgroup of#9004, #10083, #10084, …
maximal quotient ofC2×#1836, C2×#1935, C2×#1960, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 1866);