Finite Group Databasebeta
Cayley diagram

C2×C4×Q16 #2938

order128
nilpotency class3
isoclinismisoclinic class of D8
automorphismAut(G) order 16384
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C25

Aliases

direct productC2×C4×Q16

Subgroups

subgroupG/H
centerC22×C4D4
commutatorC4C23×C4
Frattini, cosocleC2×C4C24
socle, prime radicalC23C2×D4
LCSG ▷ C4 ▷ C2 ▷ C1
UCSC1 ◁ C22×C4 ◁ C2×C42 ◁ G
LECSG ▷ C2×C4 ▷ C2 ▷ C1

244 conjugacy classes of subgroups.

Full subgroup data →

Presentation

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

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

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

Conjugacy classes & character table

56 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#8946, #8950, #9656, …
maximal normal subgroup of#8946, #8950, #9656, …
maximal quotient ofC2×C8×Q16, C2×#1584, C2×#1591, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 1670);