Finite Group Databasebeta
Cayley diagram

C2×D127 #92793

order508
isoclinismisoclinic class of D127
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD254
direct productC2×D127
unambiguous semidirect productC127⋊C22
unambiguous semidirect product(C2×C127)⋊C2

Splittings

Fitting, socleC2×C127 ⋊ C2
derived, SylowC127 ⋊ C22

Subgroups

subgroupG/H
center, hypercenterC2D127
commutator, cosocle, hypocenterC127C22
FrattiniC1G
Fitting, socleC2×C127C2
LCSG ▷ C127
UCSC1 ◁ C2

10 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 129
transitive degreeμt(G) = 254

A minimal faithful permutation representation — 2 generators on 129 points:

(1,2)(3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129);(4,129)(5,128)(6,127)(7,126)(8,125)(9,124)(10,123)(11,122)(12,121)(13,120)(14,119)(15,118)(16,117)(17,116)(18,115)(19,114)(20,113)(21,112)(22,111)(23,110)(24,109)(25,108)(26,107)(27,106)(28,105)(29,104)(30,103)(31,102)(32,101)(33,100)(34,99)(35,98)(36,97)(37,96)(38,95)(39,94)(40,93)(41,92)(42,91)(43,90)(44,89)(45,88)(46,87)(47,86)(48,85)(49,84)(50,83)(51,82)(52,81)(53,80)(54,79)(55,78)(56,77)(57,76)(58,75)(59,74)(60,73)(61,72)(62,71)(63,70)(64,69)(65,68)(66,67)

Conjugacy classes & character table

130 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC4×D127, C22⋊D127, D508, …
maximal normal subgroup ofC4×D127, C22⋊D127, D508, …
maximal quotient ofC4×D127, C2×Dic127, C22⋊D127, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(508, 3);