Finite Group Databasebeta
Cayley diagram

C2×#366 #2156

order128
nilpotency class4
isoclinismisoclinic class of D16
automorphismAut(G) order 8192
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C23

Aliases

direct productC2×#366

Subgroups

subgroupG/H
center, socle, prime radicalC23D8
commutatorC8C22×C4
Frattini, cosocleC2×C8C23
LCSG ▷ C8 ▷ C4 ▷ C2 ▷ C1
UCSC1 ◁ C23 ◁ C22×C4 ◁ C22×C8 ◁ G
LECSG ▷ C2×C8 ▷ C4 ▷ C2 ▷ C1

84 conjugacy classes of subgroups.

Full subgroup data →

Presentation

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

A minimal faithful permutation representation — 3 generators on 22 points:

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

Conjugacy classes & character table

44 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#7471, #7478, C4×#366, …
maximal normal subgroup of#7471, #7478, C4×#366, …
maximal quotient ofC2×#1371, #12022, #12032, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 888);