Finite Group Databasebeta
Cayley diagram

#20548

order256
nilpotency class2
isoclinismisoclinic class of #534
automorphismAut(G) order 65536
homologyAbelianization (H1) = C22×C42 · Schur multiplier (H2) = C23×C4

Aliases

No aliases for this group.

Subgroups

subgroupG/H
center, Frattini, cosocleC22×C4C24
commutatorC22C22×C42
socleC23C23×C4
prime radicalC24C22×C4
LCSG ▷ C22 ▷ C1
UCSC1 ◁ C22×C4 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

447 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 28
transitive degreeμt(G) = 128

A minimal faithful permutation representation — 4 generators on 28 points:

(1,2,3,4)(5,6)(7,10)(8,9)(11,12)(13,14,16,20,18,22,17,21)(15,19,24,27,23,26,25,28);(6,9)(7,11)(13,15,17,25,18,23,16,24)(14,19,21,28,22,26,20,27);(5,7,8,11)(6,10,9,12);(6,9)(10,12)(15,23)(19,26)(24,25)(27,28)

Polycyclic presentation:

2^8|a^2=f,b^2=g,c^2=e,f^2=h,g^2=h,b^a=be,d^a=de,c^b=ce,d^b=dh

Conjugacy classes & character table

88 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#109780, #109784, #109875, …
maximal normal subgroup of#109780, #109784, #109875, …
maximal quotient of#184471, #184488, #184499, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 13536);