Finite Group Databasebeta
Cayley diagram

C2×D81 #66312

order324
isoclinismisoclinic class of D81
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD162
direct productC2×D81
unambiguous semidirect productC81⋊C22
unambiguous semidirect product(C2×C81)⋊C2

Splittings

FittingC2×C81 ⋊ C2
derived, SylowC81 ⋊ C22

Subgroups

subgroupG/H
center, hypercenterC2D81
commutator, cosocle, hypocenterC81C22
FrattiniC27C2×D3
FittingC2×C81C2
socleC2×C3D27
LCSG ▷ C81
UCSC1 ◁ C2

25 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 83
transitive degreeμt(G) = 162

A minimal faithful permutation representation — 2 generators on 83 points:

(1,2)(3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83);(4,83)(5,82)(6,81)(7,80)(8,79)(9,78)(10,77)(11,76)(12,75)(13,74)(14,73)(15,72)(16,71)(17,70)(18,69)(19,68)(20,67)(21,66)(22,65)(23,64)(24,63)(25,62)(26,61)(27,60)(28,59)(29,58)(30,57)(31,56)(32,55)(33,54)(34,53)(35,52)(36,51)(37,50)(38,49)(39,48)(40,47)(41,46)(42,45)(43,44)

Conjugacy classes & character table

84 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC4×D81, D324, #10619489, …
maximal normal subgroup ofC4×D81, D324, #10619489, …
maximal quotient ofDic162, C4×D81, D324, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(324, 4);