Finite Group Databasebeta
Cayley diagram

#20451

order256
nilpotency class3
isoclinismisoclinic class of AGL(1,ℤ/8)
automorphismAut(G) order 262144
homologyAbelianization (H1) = C22×C42 · Schur multiplier (H2) = C23×C42

Aliases

No aliases for this group.

Subgroups

subgroupG/H
centerC22×C4C2×D4
commutatorC4C22×C42
Frattini, cosocleC22×C4C24
socleC23C22×D4
prime radicalC24C2×D4
LCSG ▷ C4 ▷ C2 ▷ C1
UCSC1 ◁ C22×C4 ◁ C22×C42 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

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

normal subgroups only

This group has 571 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) = 128

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

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

Polycyclic presentation:

2^8|a^2=f,b^2=g,c^2=ef,d^2=h,e^2=h,f^2=h,b^a=be,c^a=ch,e^b=eh,f^b=fh

Conjugacy classes & character table

88 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#116957, #116963, #117707, …
maximal normal subgroup of#116957, #116963, #117707, …
maximal quotient of#183364, #183371, #183379, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 13439);