Finite Group Databasebeta
Cayley diagram

D121 #6849

order242
isoclinismisoclinic class of D121
automorphismAut(G) = #72230792 (order 13310) · Inn(G) = G · Out(G) = C5×C11
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD121
unambiguous semidirect productC121⋊C2

Splittings

Fitting, derived, SylowC121 ⋊ C2

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC121C2
Frattini, socleC11D11
LCSG ▷ C121
UCSC1

6 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 121
transitive degreeμt(G) = 121

A minimal faithful permutation representation — 2 generators on 121 points:

(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121);(2,121)(3,120)(4,119)(5,118)(6,117)(7,116)(8,115)(9,114)(10,113)(11,112)(12,111)(13,110)(14,109)(15,108)(16,107)(17,106)(18,105)(19,104)(20,103)(21,102)(22,101)(23,100)(24,99)(25,98)(26,97)(27,96)(28,95)(29,94)(30,93)(31,92)(32,91)(33,90)(34,89)(35,88)(36,87)(37,86)(38,85)(39,84)(40,83)(41,82)(42,81)(43,80)(44,79)(45,78)(46,77)(47,76)(48,75)(49,74)(50,73)(51,72)(52,71)(53,70)(54,69)(55,68)(56,67)(57,66)(58,65)(59,64)(60,63)(61,62)

Polycyclic presentation:

2,11^2|b^11=c,b^a=b^10c^10,c^a=c^10

Conjugacy classes & character table

62 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC2×D121, C3×D121, D363, …
maximal normal subgroup ofC2×D121, C3×D121, D121⋊C5, …
maximal quotient ofDic121, C2×D121, C3×D121, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(242, 1);