Finite Group Databasebeta
Cayley diagram

C2×#2566 #34891

order256
nilpotency class2
isoclinismisoclinic class of #2403
automorphismAut(G) order 2097152
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C27×C4

Aliases

direct productC2×#2566

Subgroups

subgroupG/H
center, socleC24C24
commutator, Frattini, cosocleC23C25
prime radicalC23×D4C22
LCSG ▷ C23 ▷ C1
UCSC1 ◁ C24 ◁ G
LECSG ▷ C23 ▷ C1

1547 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);(4,6)(7,8)(9,13)(10,12)(11,14)(15,16,18,20)(17,21,22,19);(7,8,10,12)(9,11,14,13)(15,16)(17,19)(18,20)(21,22);(3,4,5,6)(7,8)(9,11)(10,12)(13,14);(7,9,10,14)(8,11,12,13)(15,17,18,22)(16,19,20,21)

Conjugacy classes & character table

76 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#98525, #98565, #111901, …
maximal normal subgroup of#98525, #98565, #111901, …
maximal quotient ofC2×#13909, C2×#13941, C2×#13977, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 27879);