Finite Group Databasebeta
Cayley diagram

D127 #7010

order254
isoclinismisoclinic class of D127
automorphismAut(G) = AGL(1,𝔽127) (order 16002) · Inn(G) = G · Out(G) = C7×C9
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD127
unambiguous semidirect productC127⋊C2

Splittings

Fitting, socle, derived, SylowC127 ⋊ C2

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC127C2
LCSG ▷ C127
UCSC1

4 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 127
transitive degreeμt(G) = 127

A minimal faithful permutation representation — 2 generators on 127 points:

(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127);(2,127)(3,126)(4,125)(5,124)(6,123)(7,122)(8,121)(9,120)(10,119)(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:

2,127|b^a=b^126

Conjugacy classes & character table

65 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC2×D127, D127⋊C3, C3×D127, …
maximal normal subgroup ofC2×D127, D127⋊C3, C3×D127, …
maximal quotient ofDic127, C2×D127, C3×D127, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(254, 1);