Finite Group Databasebeta
Cayley diagram

#20377

order256
nilpotency class2
isoclinismisoclinic class of #534
automorphismAut(G) order 262144
homologyAbelianization (H1) = C22×C42 · Schur multiplier (H2) = C25×C4

Aliases

No aliases for this group.

Subgroups

subgroupG/H
center, Frattini, cosocleC22×C4C24
commutatorC22C22×C42
socleC23C23×C4
prime radicalC25C2×C4
LCSG ▷ C22 ▷ C1
UCSC1 ◁ C22×C4 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

835 conjugacy classes of subgroups; only the 351 normal subgroups are shown.

normal subgroups only

This group has 835 conjugacy classes of subgroups — too many to draw. Only its 351 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) = 64

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

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

Polycyclic presentation:

2^8|a^2=f,b^2=g,c^2=f,g^2=h,b^a=be,c^a=ch,d^b=dh

Conjugacy classes & character table

88 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#101214, #101218, #101222, …
maximal normal subgroup of#101214, #101218, #101222, …
maximal quotient of#181925, #181926, #181927, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 13365);