Finite Group Databasebeta
Cayley diagram

C2×#510 #3413

order128
nilpotency class4
isoclinismisoclinic class of #509
automorphismAut(G) order 4096
homologyAbelianization (H1) = C24 · Schur multiplier (H2) = C25

Aliases

direct productC2×#510

Subgroups

subgroupG/H
center, socleC22C2×D8
commutator, Frattini, cosocleC8C24
prime radicalC2×#135C2
LCSG ▷ C8 ▷ C4 ▷ C2 ▷ C1
UCSC1 ◁ C22 ◁ C22×C4 ◁ C22×C8 ◁ G
LECSG ▷ C8 ▷ C4 ▷ C2 ▷ C1

180 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)(5,13)(6,17)(7,22)(8,10)(9,14)(11,20)(12,19)(15,33)(16,30)(18,28)(21,29)(23,27)(24,32)(25,34)(26,31);(3,5,8,16)(4,9,10,24)(6,18,21,34)(7,23,19,15)(11,27,26,33)(12,28,22,25)(13,29,30,17)(14,31,32,20);(4,10)(9,24)(11,26)(12,22)(13,30)(17,29)(25,28)(27,33)

Conjugacy classes & character table

32 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#13023, #13026, #13028, …
maximal normal subgroup of#13023, #13026, #13028, …
maximal quotient ofC2×#2141, C2×#2139, C2×#2159, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 2145);