Finite Group Databasebeta
Cayley diagram

C22×#135 #3577

order128
nilpotency class3
isoclinismisoclinic class of D8
automorphismAut(G) order 98304
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C29

Aliases

direct productC22×#135

Subgroups

subgroupG/H
centerC22×C4D4
commutator, Frattini, cosocleC4C25
socleC23C2×D4
LCSG ▷ C4 ▷ C2 ▷ C1
UCSC1 ◁ C22×C4 ◁ C23×C4 ◁ G
LECSG ▷ C4 ▷ C2 ▷ C1

752 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:

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

Conjugacy classes & character table

56 conjugacy classes — view the full character table.

Relationships

Fitting subgroup ofA4×#135, #11711516, #11711517, …
maximal subgroup of#11025, #11026, #12733, …
maximal normal subgroup of#11025, #11026, #12733, …
maximal quotient ofC22×#416, C22×#427, C22×C4×D8, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 2309);