Finite Group Databasebeta
Cayley diagram

C2×#405 #2872

order128
nilpotency class2
isoclinismisoclinic class of D4
automorphismAut(G) order 16384
homologyAbelianization (H1) = C22×C42 · Schur multiplier (H2) = C24×C4

Aliases

direct productC2×#405

Subgroups

subgroupG/H
centerC22×C8C22
commutatorC2C22×C42
Frattini, cosocleC2×C4C24
socleC23C22×C4
prime radicalC24C2×C4
LCSG ▷ C2 ▷ C1
UCSC1 ◁ C22×C8 ◁ G
LECSG ▷ C2×C4 ▷ C2 ▷ C1

296 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);(7,8,10,13,11,14,17,20)(9,12,16,19,15,18,21,22);(3,4,5,6)(7,9)(8,12)(10,16)(11,15)(13,19)(14,18)(17,21)(20,22);(9,15)(12,18)(16,21)(19,22)

Conjugacy classes & character table

80 conjugacy classes — view the full character table.

Relationships

Frattini subgroup of#93286, #93287, #93325, …
maximal subgroup of#8156, #8157, #8601, …
maximal normal subgroup of#8156, #8157, #8601, …
maximal quotient ofC2×C8×M16, C2×#1450, C2×#1451, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 1604);