Finite Group Databasebeta
Cayley diagram

C2×C4×#135 #60151

order256
nilpotency class3
isoclinismisoclinic class of D8
automorphismAut(G) order 262144
homologyAbelianization (H1) = C24×C4 · Schur multiplier (H2) = C29

Aliases

direct productC2×C4×#135

Subgroups

subgroupG/H
centerC2×C42D4
commutatorC4C24×C4
Frattini, cosocleC2×C4C25
socleC23C22×D4
prime radicalC22×#135C2
LCSG ▷ C4 ▷ C2 ▷ C1
UCSC1 ◁ C2×C42 ◁ C22×C42 ◁ G
LECSG ▷ C2×C4 ▷ C2 ▷ C1

1447 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 22
transitive degreeμt(G) = 128

A minimal faithful permutation representation — 5 generators on 22 points:

(1,2);(3,4,5,6);(7,8)(9,16)(10,14)(11,19)(12,15)(13,17)(18,21)(20,22);(7,9)(8,13)(10,17)(11,20)(12,18)(14,21)(15,22)(16,19);(7,10,12,11)(8,14,15,19)(9,17,18,20)(13,21,22,16)

Conjugacy classes & character table

112 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#129502, #129505, #146728, …
maximal normal subgroup of#129502, #129505, #146728, …
maximal quotient ofC2×C8×#135, C2×#17863, C2×#17886, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 53139);