Finite Group Databasebeta
Cayley diagram

#20664

order256
nilpotency class3
isoclinismisoclinic class of #3057
automorphismAut(G) order 65536
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C26

Aliases

No aliases for this group.

Subgroups

subgroupG/H
center, socleC23C22×D4
commutatorC2×C4C23×C4
Frattini, cosocleC22×C4C24
prime radicalC22×#41C22
LCSG ▷ C2×C4 ▷ C2 ▷ C1
UCSC1 ◁ C23 ◁ C22×#41 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

719 conjugacy classes of subgroups; only the 271 normal subgroups are shown.

normal subgroups only

This group has 719 conjugacy classes of subgroups — too many to draw. Only its 271 normal subgroups are shown.

Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.

Full subgroup data →

Presentation

minimal degreeμ(G) = 24
transitive degreeμt(G) = 128

A minimal faithful permutation representation — 4 generators on 24 points:

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

Polycyclic presentation:

2^8|a^2=g,b^2=e,e^2=h,b^a=be,c^a=cf,e^a=eh,d^b=dh,d^c=dh

Conjugacy classes & character table

64 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#138346, #138347, #361200, …
maximal normal subgroup of#138346, #138347, #361200, …
maximal quotient of#188712, #188719, #188726, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 13652);