Finite Group Databasebeta
Cayley diagram

C2×#1861 #20866

order256
nilpotency class3
isoclinismisoclinic class of #453
automorphismAut(G) order 8192
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C26

Aliases

direct productC2×#1861

Subgroups

subgroupG/H
centerC2×C4#120
commutatorC2×C4C23×C4
Frattini, cosocleC22×C4C24
socleC22#385
prime radicalC22×#41C22
LCSG ▷ C2×C4 ▷ C2 ▷ C1
UCSC1 ◁ C2×C4 ◁ C23×C4 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

679 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 18
transitive degreeμt(G) = 32

A minimal faithful permutation representation — 4 generators on 18 points:

(1,2);(3,4,8,12,9,13,7,15)(5,14,11,10,17,18,16,6);(3,5,8,11,9,17,7,16)(4,10,12,18,13,6,15,14);(3,6)(4,11)(5,15)(7,18)(8,14)(9,10)(12,17)(13,16)

Conjugacy classes & character table

64 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC4×#1861, #354449, #354483, …
maximal normal subgroup ofC4×#1861, #354449, #354483, …
maximal quotient ofC2×#8839, C2×#8840, #191808, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 13854);