Finite Group Databasebeta

D405 #11717596

order810
isoclinismisoclinic class of D405
automorphismAut(G) order 87480
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD405
unambiguous semidirect productC5⋊D81
unambiguous semidirect productC81⋊D5

Splittings

Fitting, derived, HallC5×C81 ⋊ C2
SylowC81 ⋊ D5
SylowC5 ⋊ D81

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC5×C81C2
FrattiniC27D15
socleC3×C5D27
LCSG ▷ C5×C81
UCSC1

20 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 86
transitive degreeμt(G) = 405

A minimal faithful permutation representation — 2 generators on 86 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)(82,83,84,85,86);(2,81)(3,80)(4,79)(5,78)(6,77)(7,76)(8,75)(9,74)(10,73)(11,72)(12,71)(13,70)(14,69)(15,68)(16,67)(17,66)(18,65)(19,64)(20,63)(21,62)(22,61)(23,60)(24,59)(25,58)(26,57)(27,56)(28,55)(29,54)(30,53)(31,52)(32,51)(33,50)(34,49)(35,48)(36,47)(37,46)(38,45)(39,44)(40,43)(41,42)(83,86)(84,85)

Polycyclic presentation:

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

Conjugacy classes & character table

204 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD5×D81, C2×D405, D1215, …
maximal normal subgroup ofD5×D81, C2×D405
maximal quotient ofDic405, C2×D405, D1215, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(810, 3);