Finite Group Databasebeta
Cayley diagram

C2×#540 #3452

order128
nilpotency class2
isoclinismisoclinic class of #534
automorphismAut(G) order 65536
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C28

Aliases

direct productC2×#540

Subgroups

subgroupG/H
center, socleC23C24
commutator, Frattini, cosocleC22C25
LCSG ▷ C22 ▷ C1
UCSC1 ◁ C23 ◁ G
LECSG ▷ C22 ▷ C1

630 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 18
transitive degreeμt(G) = 64

A minimal faithful permutation representation — 5 generators on 18 points:

(1,2);(3,4)(5,9)(6,7)(8,10)(12,15)(13,17);(4,7)(8,9)(11,12,14,15)(13,16,17,18);(3,4)(5,8)(6,7)(9,10)(11,12)(13,16)(14,15)(17,18);(3,5,6,10)(4,8,7,9)(11,13,14,17)(12,16,15,18)

Conjugacy classes & character table

44 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#8326, #8518, #8526, …
maximal normal subgroup of#8326, #8518, #8526, …
maximal quotient ofC2×#2314, C2×#2319, C2×#2324, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 2184);