Finite Group Databasebeta
Cayley diagram

C22×#95 #2266

order128
nilpotency class2
isoclinismisoclinic class of D4
automorphismAut(G) order 2359296
homologyAbelianization (H1) = C22×C42 · Schur multiplier (H2) = C28

Aliases

direct productC22×#95

Subgroups

subgroupG/H
center, socle, prime radicalC25C22
commutatorC2C22×C42
Frattini, cosocleC23C24
LCSG ▷ C2 ▷ C1
UCSC1 ◁ C25 ◁ G
LECSG ▷ C23 ▷ C1

940 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 16
transitive degreeμt(G) = 128

A minimal faithful permutation representation — 4 generators on 16 points:

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

Conjugacy classes & character table

80 conjugacy classes — view the full character table.

Relationships

derived subgroup ofC22⋊(#95⋊C3), #7555⋊C3, #7556⋊C3, …
Frattini subgroup of#93300, #93372, #93557, …
Fitting subgroup ofC22×#95⋊C3, A4×#95, C22⋊(#95⋊C3), …
maximal subgroup of#7554, #7555, #7556, …
maximal normal subgroup of#7554, #7555, #7556, …
maximal quotient ofC2×C4×#95, C2×C22⋊#95, C2×C4⋊#95, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 998);