Finite Group Databasebeta
Cayley diagram

C2×#427 #2909

order128
nilpotency class3
isoclinismisoclinic class of D8
automorphismAut(G) order 32768
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C24×C4

Aliases

direct productC2×#427

Subgroups

subgroupG/H
centerC22×C4D4
commutatorC4C23×C4
Frattini, cosocleC2×C4C24
socleC23C2×D4
prime radicalC24D4
LCSG ▷ C4 ▷ C2 ▷ C1
UCSC1 ◁ C22×C4 ◁ C23×C4 ◁ G
LECSG ▷ C2×C4 ▷ C2 ▷ C1

256 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 22
transitive degreeμt(G) = 64

A minimal faithful permutation representation — 4 generators on 22 points:

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

Conjugacy classes & character table

56 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#10859, #10860, #10866, …
maximal normal subgroup of#10859, #10860, #10866, …
maximal quotient ofC2×#1564, C2×#1568, #17793, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 1641);