Finite Group Databasebeta
Cayley diagram

C22×#126 #3438

order128
nilpotency class2
isoclinismisoclinic class of #120
automorphismAut(G) order 1179648
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C28

Aliases

direct productC22×#126

Subgroups

subgroupG/H
center, socleC24C23
commutator, Frattini, cosocleC22C25
prime radicalC25C22
LCSG ▷ C22 ▷ C1
UCSC1 ◁ C24 ◁ G
LECSG ▷ C22 ▷ C1

660 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 20
transitive degreeμt(G) = 64

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

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

Conjugacy classes & character table

56 conjugacy classes — view the full character table.

Relationships

derived subgroup of#72235822, #72235838, #72235841, …
Frattini subgroup of#93127, #93128, #93131, …
Fitting subgroup ofC22×#126⋊C3, A4×#126, #85646, …
maximal subgroup of#8309, #8545, #8556, …
maximal normal subgroup of#8309, #8545, #8556, …
maximal quotient ofC22×#383, C22×#387, C22×#388, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 2170);