Finite Group Databasebeta

D765 #13095254

order1530
isoclinismisoclinic class of D765
automorphismAut(G) order 293760
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD765
unambiguous semidirect productC5⋊D153
unambiguous semidirect productC9⋊D85
unambiguous semidirect productC17⋊D45

Splittings

Fitting, derived, HallC5×C9×C17 ⋊ C2
HallC9×C17 ⋊ D5
HallC5×C17 ⋊ D9
HallC5×C9 ⋊ D17
SylowC17 ⋊ D45
SylowC9 ⋊ D85
SylowC5 ⋊ D153

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC5×C9×C17C2
FrattiniC3D255
socleC3×C5×C17D3
LCSG ▷ C5×C9×C17
UCSC1

24 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 31
transitive degreeμt(G) = 765

A minimal faithful permutation representation — 2 generators on 31 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);(2,9)(3,8)(4,7)(5,6)(11,14)(12,13)(16,31)(17,30)(18,29)(19,28)(20,27)(21,26)(22,25)(23,24)

Polycyclic presentation:

2,3,5,17,3|b^3=e^2,b^a=b^2e,c^a=c^4,d^a=d^16,e^a=e^2

Conjugacy classes & character table

384 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD17×D45, D5×D153, D9×D85, …
maximal normal subgroup ofD17×D45, D5×D153, D9×D85, …
maximal quotient ofDic765, C2×D765, C11×D765, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1530, 7);