Finite Group Databasebeta
Cayley diagram

C2×#2481 #34661

order256
nilpotency class2
isoclinismisoclinic class of #2403
automorphismAut(G) order 524288
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C28

Aliases

direct productC2×#2481

Subgroups

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

1557 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);(7,8,11,12)(9,14,13,10)(15,16)(17,18)(19,21)(20,22);(4,6)(8,12)(9,13)(15,17,19,22)(16,18,21,20);(3,4)(5,6)(7,9,11,13)(8,10,12,14)(15,17)(16,20)(18,21)(19,22);(7,10)(8,13)(9,12)(11,14)(15,18,19,20)(16,17,21,22)

Conjugacy classes & character table

76 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#221412, #221476, #372822, …
maximal normal subgroup of#221412, #221476, #372822, …
maximal quotient ofC2×#13882, C2×#13901, C2×#13989, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 27649);