Finite Group Databasebeta
Cayley diagram

#21559

order256
nilpotency class3
isoclinismisoclinic class of #3068
automorphismAut(G) = #72337551 (order 2048) · Inn(G) = C2×#121 · Out(G) = C22×D4
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C25

Aliases

No aliases for this group.

Subgroups

subgroupG/H
centerC4C2×#121
commutatorC2×C4C23×C4
Frattini, cosocleC22×C4C24
socleC2C4×#121
prime radical#3067C2
LCSG ▷ C2×C4 ▷ C2 ▷ C1
UCSC1 ◁ C4 ◁ C22×C8 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

434 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 32
transitive degreeμt(G) = 32

A minimal faithful permutation representation — 4 generators on 32 points:

(1,2,6,12,8,13,7,11)(3,14,5,9,17,24,16,25)(4,18,20,10,21,26,22,27)(15,29,19,28,30,23,31,32);(1,3,6,5,8,17,7,16)(2,9,11,14,13,25,12,24)(4,15,20,19,21,30,22,31)(10,23,18,28,27,29,26,32);(1,4)(2,10)(3,15)(5,19)(6,20)(7,22)(8,21)(9,23)(11,18)(12,26)(13,27)(14,28)(16,31)(17,30)(24,32)(25,29);(1,5,6,17,8,16,7,3)(2,9,12,24,13,25,11,14)(4,19,20,30,21,31,22,15)(10,23,26,32,27,29,18,28)

Polycyclic presentation:

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

Conjugacy classes & character table

58 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#495739, #495740, #495899, …
maximal normal subgroup of#495739, #495740, #495899, …
maximal quotient of#211042, #211043, #211044, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 14547);