Finite Group Databasebeta
Cayley diagram

C2×#1845 #20795

order256
nilpotency class3
isoclinismisoclinic class of #465
automorphismAut(G) order 2097152
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C25×C4

Aliases

direct productC2×#1845

Subgroups

subgroupG/H
center, socle, prime radicalC24C2×D4
commutatorC2×C4C23×C4
Frattini, cosocleC22×C4C24
LCSG ▷ C2×C4 ▷ C2 ▷ C1
UCSC1 ◁ C24 ◁ C22×C42 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

679 conjugacy classes of subgroups; only the 431 normal subgroups are shown.

normal subgroups only

This group has 679 conjugacy classes of subgroups — too many to draw. Only its 431 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) = 18
transitive degreeμt(G) = 256

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

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

Conjugacy classes & character table

88 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#109004, #109006, #109007, …
maximal normal subgroup of#109004, #109006, #109007, …
maximal quotient ofC2×#8806, C2×#8810, #191384, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 13783);