Finite Group Databasebeta

D8379 #30660497

order16758
automorphism?
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD8379
unambiguous semidirect productC9⋊D931
unambiguous semidirect productC19⋊D441
unambiguous semidirect productC49⋊D171

Splittings

Fitting, derived, HallC9×C19×C49 ⋊ C2
HallC19×C49 ⋊ D9
HallC9×C49 ⋊ D19
HallC9×C19 ⋊ D49
SylowC49 ⋊ D171
SylowC19 ⋊ D441
SylowC9 ⋊ D931

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC9×C19×C49C2
FrattiniC3×C7D399
socleC3×C7×C19D21
LCSG ▷ C9×C19×C49
UCSC1

36 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 77
transitive degreeμt(G) = 8379

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

Polycyclic presentation:

2,3,7,19,3,7|b^3=e^2,c^7=f^6,b^a=b^2e,c^a=c^6f,d^a=d^18,e^a=e^2,f^a=f^6

Conjugacy classes & character table

4191 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD19×D441, D49×D171, D9×D931, …
maximal normal subgroup ofD19×D441, D49×D171, D9×D931, …
maximal quotient ofDic8379, C2×D8379, D25137

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(16758, 24);