Finite Group Databasebeta

D855 #13133751

order1710
isoclinismisoclinic class of D855
automorphismAut(G) order 369360
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD855
unambiguous semidirect productC5⋊D171
unambiguous semidirect productC9⋊D95
unambiguous semidirect productC19⋊D45

Splittings

Fitting, derived, HallC5×C9×C19 ⋊ C2
HallC9×C19 ⋊ D5
HallC5×C19 ⋊ D9
HallC5×C9 ⋊ D19
SylowC19 ⋊ D45
SylowC9 ⋊ D95
SylowC5 ⋊ D171

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC5×C9×C19C2
FrattiniC3D285
socleC3×C5×C19D3
LCSG ▷ C5×C9×C19
UCSC1

24 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 33
transitive degreeμt(G) = 855

A minimal faithful permutation representation — 2 generators on 33 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);(2,9)(3,8)(4,7)(5,6)(11,14)(12,13)(16,33)(17,32)(18,31)(19,30)(20,29)(21,28)(22,27)(23,26)(24,25)

Polycyclic presentation:

2,3,5,19,3|b^3=e^2,b^a=b^2e,c^a=c^4,d^a=d^18,e^a=e^2

Conjugacy classes & character table

429 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD19×D45, D5×D171, D9×D95, …
maximal normal subgroup ofD19×D45, D5×D171, D9×D95, …
maximal quotient ofDic855, C2×D855, C7×D855, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1710, 11);