Finite Group Databasebeta
Cayley diagram

C2×#1757 #20400

order256
nilpotency class3
isoclinismisoclinic class of #99
automorphismAut(G) order 16384
homologyAbelianization (H1) = C22×C42 · Schur multiplier (H2) = C25×C4

Aliases

direct productC2×#1757

Subgroups

subgroupG/H
centerC2×C8C22⋊C4
commutatorC22C22×C42
Frattini, cosocleC22×C4C24
socleC22C4×C22⋊C4
prime radicalC22×#41C22
LCSG ▷ C22 ▷ C2 ▷ C1
UCSC1 ◁ C2×C8 ◁ C23×C8 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

737 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 34
transitive degreeμt(G) = 64

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

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

Conjugacy classes & character table

88 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC2×#7207, #127082, C2×#7208, …
maximal normal subgroup ofC2×#7207, #127082, C2×#7208, …
maximal quotient ofC2×#8156, #182035, C2×#8158, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 13388);