Finite Group Databasebeta
Cayley diagram

C2×#562 #3527

order128
nilpotency class2
isoclinismisoclinic class of #560
automorphismAut(G) order 65536
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C28

Aliases

direct productC2×#562

Subgroups

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

576 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);(4,7)(5,9)(11,12)(13,17)(14,15)(16,18);(4,7)(8,10)(12,15)(16,17);(3,4)(5,8)(6,7)(9,10)(11,13,14,18)(12,16,15,17);(3,5)(4,8)(6,9)(7,10)(11,12)(13,16)(14,15)(17,18)

Conjugacy classes & character table

38 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#8508, C2×#1656, C2×#1661, …
maximal normal subgroup of#8508, C2×#1656, C2×#1661, …
maximal quotient ofC2×#2376, C2×#2377, C2×#2378, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 2259);