Finite Group Databasebeta
Cayley diagram

D249 #92512

order498
isoclinismisoclinic class of D249
automorphism?
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD249
unambiguous semidirect productC3⋊D83
unambiguous semidirect productC83⋊D3

Splittings

Fitting, socle, derived, HallC3×C83 ⋊ C2
SylowC83 ⋊ D3
SylowC3 ⋊ D83

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC3×C83C2
LCSG ▷ C3×C83
UCSC1

8 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 86
transitive degreeμt(G) = 249

A minimal faithful permutation representation — 2 generators on 86 points:

(1,2,3)(4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86);(2,3)(5,86)(6,85)(7,84)(8,83)(9,82)(10,81)(11,80)(12,79)(13,78)(14,77)(15,76)(16,75)(17,74)(18,73)(19,72)(20,71)(21,70)(22,69)(23,68)(24,67)(25,66)(26,65)(27,64)(28,63)(29,62)(30,61)(31,60)(32,59)(33,58)(34,57)(35,56)(36,55)(37,54)(38,53)(39,52)(40,51)(41,50)(42,49)(43,48)(44,47)(45,46)

Polycyclic presentation:

2,3,83|b^a=b^2,c^a=c^82

Conjugacy classes & character table

126 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD3×D83, C2×D249, D747, …
maximal normal subgroup ofD3×D83, C2×D249, C3×D249, …
maximal quotient ofDic249, C2×D249, D747, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(498, 3);