Finite Group Databasebeta
Cayley diagram

C22×#125 #3437

order128
nilpotency class2
isoclinismisoclinic class of #120
automorphismAut(G) order 1572864
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C28

Aliases

direct productC22×#125

Subgroups

subgroupG/H
center, socle, prime radicalC24C23
commutator, Frattini, cosocleC22C25
LCSG ▷ C22 ▷ C1
UCSC1 ◁ C24 ◁ G
LECSG ▷ C22 ▷ C1

596 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 20
transitive degreeμt(G) = 128

A minimal faithful permutation representation — 5 generators on 20 points:

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

Conjugacy classes & character table

56 conjugacy classes — view the full character table.

Relationships

Frattini subgroup of#93118, #93121, #93123, …
Fitting subgroup ofA4×#125, #11711022, #11713295, …
maximal subgroup of#8306, #8335, #8554, …
maximal normal subgroup of#8306, #8335, #8554, …
maximal quotient ofC22×#382, C22×#387, C22×#389, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 2169);