Finite Group Databasebeta

D981 #14520053

order1962
isoclinismisoclinic class of D981
automorphismAut(G) order 635688
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD981
unambiguous semidirect productC9⋊D109
unambiguous semidirect productC109⋊D9

Splittings

Fitting, derived, HallC9×C109 ⋊ C2
SylowC109 ⋊ D9
SylowC9 ⋊ D109

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC9×C109C2
FrattiniC3D327
socleC3×C109D3
LCSG ▷ C9×C109
UCSC1

12 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 118
transitive degreeμt(G) = 981

A minimal faithful permutation representation — 2 generators on 118 points:

(1,2,3,4,5,6,7,8,9)(10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118);(2,9)(3,8)(4,7)(5,6)(11,118)(12,117)(13,116)(14,115)(15,114)(16,113)(17,112)(18,111)(19,110)(20,109)(21,108)(22,107)(23,106)(24,105)(25,104)(26,103)(27,102)(28,101)(29,100)(30,99)(31,98)(32,97)(33,96)(34,95)(35,94)(36,93)(37,92)(38,91)(39,90)(40,89)(41,88)(42,87)(43,86)(44,85)(45,84)(46,83)(47,82)(48,81)(49,80)(50,79)(51,78)(52,77)(53,76)(54,75)(55,74)(56,73)(57,72)(58,71)(59,70)(60,69)(61,68)(62,67)(63,66)(64,65)

Polycyclic presentation:

2,3,109,3|b^3=d^2,b^a=b^2d,c^a=c^108,d^a=d^2

Conjugacy classes & character table

492 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD9×D109, C2×D981, C7×D981, …
maximal normal subgroup ofD9×D109, C2×D981, C7×D981, …
maximal quotient ofDic981, C2×D981, C7×D981, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1962, 5);