Finite Group Databasebeta
Cayley diagram

C4×#2121 #492991

order512
nilpotency class4
isoclinismisoclinic class of #2121
automorphism?
homologyAbelianization (H1) = C22×C42 · Schur multiplier (H2) = C25×C4

Aliases

direct productC4×#2121

Subgroups

subgroupG/H
centerC2×C4C2×#99
commutatorC23C22×C42
Frattini, cosocleC22×D4C24
socleC22C22×#99
prime radicalC2×#534C22
LCSG ▷ C23 ▷ C22 ▷ C2 ▷ C1
UCSC1 ◁ C2×C4 ◁ C23×C4 ◁ C22×C4×D4 ◁ G
LECSG ▷ C22×D4 ▷ C22 ▷ C2 ▷ C1

1513 conjugacy classes of subgroups.

Full subgroup data →

Presentation

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

A minimal faithful permutation representation — 4 generators on 20 points:

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

Conjugacy classes & character table

92 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC4×#12753, C4×#33551, C4×#12705, …
maximal normal subgroup ofC4×#12753, C4×#33551, C4×#12705, …
maximal quotient ofAGL(1,𝔽5)×#2121

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(512, 400187);