Finite Group Databasebeta
Cayley diagram

D79 #3923

order158
isoclinismisoclinic class of D79
automorphismAut(G) = AGL(1,𝔽79) (order 6162) · Inn(G) = G · Out(G) = C3×C13
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD79
unambiguous semidirect productC79⋊C2

Splittings

Fitting, socle, derived, SylowC79 ⋊ C2

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC79C2
LCSG ▷ C79
UCSC1

4 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 79
transitive degreeμt(G) = 79

A minimal faithful permutation representation — 2 generators on 79 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);(2,79)(3,78)(4,77)(5,76)(6,75)(7,74)(8,73)(9,72)(10,71)(11,70)(12,69)(13,68)(14,67)(15,66)(16,65)(17,64)(18,63)(19,62)(20,61)(21,60)(22,59)(23,58)(24,57)(25,56)(26,55)(27,54)(28,53)(29,52)(30,51)(31,50)(32,49)(33,48)(34,47)(35,46)(36,45)(37,44)(38,43)(39,42)(40,41)

Polycyclic presentation:

2,79|b^a=b^78

Conjugacy classes & character table

41 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC2×D79, D79⋊C3, C3×D79, …
maximal normal subgroup ofC2×D79, D79⋊C3, C3×D79, …
maximal quotient ofDic79, C2×D79, C3×D79, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(158, 1);