Finite Group Databasebeta
Cayley diagram

#21979

order256
nilpotency class2
isoclinismisoclinic class of #2812
automorphismAut(G) order 65536
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C23×C4

Aliases

No aliases for this group.

Subgroups

subgroupG/H
center, Frattini, cosocleC22×C4C24
commutator, socleC23C23×C4
prime radicalC24C22×C4
LCSG ▷ C23 ▷ C1
UCSC1 ◁ C22×C4 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

385 conjugacy classes of subgroups; only the 191 normal subgroups are shown.

normal subgroups only

This group has 385 conjugacy classes of subgroups — too many to draw. Only its 191 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) = 28
transitive degreeμt(G) = 128

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

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

Polycyclic presentation:

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

Conjugacy classes & character table

52 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#115843, #115844, #115845, …
maximal normal subgroup of#115843, #115844, #115845, …
maximal quotient of#217541, #217542, #217543, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 14967);