Finite Group Databasebeta
Cayley diagram

C4×#443 #20509

order256
nilpotency class3
isoclinismisoclinic class of D8
automorphismAut(G) order 16384
homologyAbelianization (H1) = C22×C42 · Schur multiplier (H2) = C24×C4

Aliases

direct productC4×#443

Subgroups

subgroupG/H
centerC4×C8D4
commutatorC4C22×C42
Frattini, cosocleC22×C4C24
socleC22C2×C4×D4
prime radicalC2×#135C22
LCSG ▷ C4 ▷ C2 ▷ C1
UCSC1 ◁ C4×C8 ◁ C2×C4×C8 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

523 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);(5,6,9,13,10,7,14,12)(8,11,16,19,17,15,20,18);(5,7)(6,10)(8,15)(9,12)(11,17)(13,14)(16,18)(19,20);(5,8,9,16,10,17,14,20)(6,11,13,19,7,15,12,18)

Conjugacy classes & character table

112 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC4×#1335, #128526, C4×#1336, …
maximal normal subgroup ofC4×#1335, #128526, C4×#1336, …
maximal quotient ofC4×C8×D8, C4×C8×SD16, C4×C8×Q16, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 13497);