Finite Group Databasebeta
Cayley diagram

C2×D79 #64655

order316
isoclinismisoclinic class of D79
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD158
direct productC2×D79
unambiguous semidirect productC79⋊C22
unambiguous semidirect product(C2×C79)⋊C2

Splittings

Fitting, socleC2×C79 ⋊ C2
derived, SylowC79 ⋊ C22

Subgroups

subgroupG/H
center, hypercenterC2D79
commutator, cosocle, hypocenterC79C22
FrattiniC1G
Fitting, socleC2×C79C2
LCSG ▷ C79
UCSC1 ◁ C2

10 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 81
transitive degreeμt(G) = 158

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

Conjugacy classes & character table

82 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC4×D79, D316, C22⋊D79, …
maximal normal subgroup ofC4×D79, D316, C22⋊D79, …
maximal quotient ofDic158, C4×D79, D316, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(316, 3);