Finite Group Databasebeta
Cayley diagram

C2×#508 #3411

order128
nilpotency class4
isoclinismisoclinic class of D16
automorphismAut(G) = #72256975 (order 4096) · Inn(G) = D8 · Out(G) = #34655
homologyAbelianization (H1) = C24 · Schur multiplier (H2) = C25

Aliases

direct productC2×#508

Subgroups

subgroupG/H
centerC2×C4D8
commutator, Frattini, cosocleC8C24
socleC22C2×D8
LCSG ▷ C8 ▷ C4 ▷ C2 ▷ C1
UCSC1 ◁ C2×C4 ◁ C22×C4 ◁ C22×C8 ◁ G
LECSG ▷ C8 ▷ C4 ▷ C2 ▷ C1

184 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 34
transitive degreeμt(G) = 64

A minimal faithful permutation representation — 4 generators on 34 points:

(1,2);(3,4)(5,14)(6,11)(7,19)(8,23)(9,13)(10,16)(12,21)(15,30)(17,31)(18,29)(20,25)(22,33)(24,28)(26,34)(27,32);(3,5)(4,10)(6,15)(7,20)(8,24)(9,17)(11,25)(12,28)(13,27)(14,19)(16,21)(18,32)(22,34)(23,26)(29,30)(31,33);(3,6,9,8)(4,11,13,23)(5,15,17,24)(7,18,22,21)(10,25,27,26)(12,19,29,33)(14,30,31,28)(16,20,32,34)

Conjugacy classes & character table

44 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#13011, #13016, #13241, …
maximal normal subgroup of#13011, #13016, #13241, …
maximal quotient ofC2×#2138, C2×#2158, C2×C4×D16, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 2143);