Finite Group Databasebeta
Cayley diagram

C2×#1840 #20771

order256
nilpotency class2
isoclinismisoclinic class of #392
automorphismAut(G) order 786432
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C25

Aliases

direct productC2×#1840

Subgroups

subgroupG/H
centerC23×C4C23
commutatorC23C23×C4
Frattini, cosocleC22×C4C24
socle, prime radicalC24C22×C4
LCSG ▷ C23 ▷ C1
UCSC1 ◁ C23×C4 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

447 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 34
transitive degreeμt(G) = 256

A minimal faithful permutation representation — 4 generators on 34 points:

(1,2);(3,4)(5,10)(6,8)(7,9)(11,12)(13,15)(14,16)(17,18)(19,20,22,25,23,26,29,32)(21,24,28,31,27,30,33,34);(3,5,7,6)(4,8,9,10)(11,13,14,17)(12,15,16,18)(19,21)(20,24)(22,28)(23,27)(25,31)(26,30)(29,33)(32,34);(3,6,7,5)(4,8,9,10)(12,16)(15,18)(21,27)(24,30)(28,33)(31,34)

Conjugacy classes & character table

88 conjugacy classes — view the full character table.

Relationships

Fitting subgroup ofC2×#1840⋊C3
maximal subgroup ofC4×#1840, #355039, #355041, …
maximal normal subgroup ofC4×#1840, #355039, #355041, …
maximal quotient ofC2×#8802, #191290, #191291, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 13759);