Finite Group Databasebeta
Cayley diagram

#21257

order256
nilpotency class3
isoclinismisoclinic class of #447
automorphismAut(G) order 131072
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C25×C4

Aliases

No aliases for this group.

Subgroups

subgroupG/H
centerC22×C4C2×D4
commutatorC2×C4C23×C4
Frattini, cosocleC22×C4C24
socleC23C22×D4
prime radicalC2×#532C2
LCSG ▷ C2×C4 ▷ C2 ▷ C1
UCSC1 ◁ C22×C4 ◁ C22×C42 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

825 conjugacy classes of subgroups; only the 255 normal subgroups are shown.

normal subgroups only

This group has 825 conjugacy classes of subgroups — too many to draw. Only its 255 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:

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

Polycyclic presentation:

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

Conjugacy classes & character table

76 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#107430, #107524, #110173, …
maximal normal subgroup of#107430, #107524, #110173, …
maximal quotient of#204485, #204495, #204509, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 14245);