Finite Group Databasebeta
Cayley diagram

C2×#542 #3454

order128
nilpotency class2
isoclinismisoclinic class of #534
automorphismAut(G) order 32768
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C28

Aliases

direct productC2×#542

Subgroups

subgroupG/H
center, socleC23C24
commutator, Frattini, cosocleC22C25
prime radicalC2×#121C2
LCSG ▷ C22 ▷ C1
UCSC1 ◁ C23 ◁ G
LECSG ▷ C22 ▷ C1

566 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)(6,8)(7,10)(13,17)(15,18);(3,4,6,8)(5,7,10,9)(11,12,14,16)(13,15,17,18);(3,4)(5,7)(6,8)(9,10)(11,13)(12,15)(14,17)(16,18);(3,5,6,10)(4,7,8,9)

Conjugacy classes & character table

44 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#8325, #8519, #8523, …
maximal normal subgroup of#8325, #8519, #8523, …
maximal quotient ofC2×#2314, C2×#2319, C2×#2320, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 2186);