Finite Group Databasebeta
Cayley diagram

C22×D16 #3408

order128
nilpotency class4
isoclinismisoclinic class of D16
automorphismAut(G) order 49152
homologyAbelianization (H1) = C24 · Schur multiplier (H2) = C26

Aliases

direct productC22×D16

Subgroups

subgroupG/H
center, socleC23D8
commutator, Frattini, cosocleC8C24
LCSG ▷ C8 ▷ C4 ▷ C2 ▷ C1
UCSC1 ◁ C23 ◁ C22×C4 ◁ C22×C8 ◁ G
LECSG ▷ C8 ▷ C4 ▷ C2 ▷ C1

220 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 20
transitive degreeμt(G) = 64

A minimal faithful permutation representation — 4 generators on 20 points:

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

Conjugacy classes & character table

44 conjugacy classes — view the full character table.

Relationships

Fitting subgroup ofA4×D16, #11711662, #11711664, …
maximal subgroup of#13012, #13017, #13235, …
maximal normal subgroup of#13012, #13017, #13235, …
maximal quotient ofC22×#357, C22×#366, C2×C4×D16, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 2140);