Finite Group Databasebeta
Cayley diagram

C2×#2550 #34888

order256
nilpotency class2
isoclinismisoclinic class of #2403
automorphismAut(G) order 1048576
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C28

Aliases

direct productC2×#2550

Subgroups

subgroupG/H
center, socle, prime radicalC24C24
commutator, Frattini, cosocleC23C25
LCSG ▷ C23 ▷ C1
UCSC1 ◁ C24 ◁ G
LECSG ▷ C23 ▷ C1

1287 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 22
transitive degreeμt(G) = 256

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

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

Conjugacy classes & character table

76 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#98498, #98538, #122056, …
maximal normal subgroup of#98498, #98538, #122056, …
maximal quotient ofC2×#13909, C2×#13954, C2×#14005, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 27876);