Finite Group Databasebeta
Cayley diagram

#19721

order256
nilpotency class3
isoclinismisoclinic class of #19713
automorphismAut(G) order 32768
homologyAbelianization (H1) = C24 · Schur multiplier (H2) = C23×C8

Aliases

No aliases for this group.

Subgroups

subgroupG/H
center, socleC22C2×#127
commutator, Frattini, cosocleC42C24
LCSG ▷ C42 ▷ C22 ▷ C1
UCSC1 ◁ C22 ◁ C2×C42 ◁ G
LECSG ▷ C42 ▷ C22 ▷ C1

399 conjugacy classes of subgroups; only the 119 normal subgroups are shown.

normal subgroups only

This group has 399 conjugacy classes of subgroups — too many to draw. Only its 119 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:

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

Polycyclic presentation:

2^8|a^2=g,b^2=e,c^2=f,d^2=g,e^2=g,f^2=h,b^a=be,c^a=cf,e^a=eg,f^a=fh,d^b=dh,d^c=dg

Conjugacy classes & character table

40 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#139430, #153543, #153550, …
maximal normal subgroup of#139430, #153543, #153550, …
maximal quotient of#191521, #206262, #206269, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 12709);