Finite Group Databasebeta

D9387 #34037371

order18774
automorphism?
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD9387
unambiguous semidirect productC7⋊D1341
unambiguous semidirect productC9⋊D1043
unambiguous semidirect productC149⋊D63

Splittings

Fitting, derived, HallC7×C9×C149 ⋊ C2
HallC9×C149 ⋊ D7
HallC7×C149 ⋊ D9
SylowC149 ⋊ D63
HallC7×C9 ⋊ D149
SylowC9 ⋊ D1043
SylowC7 ⋊ D1341

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC7×C9×C149C2
FrattiniC3D3129
socleC3×C7×C149D3
LCSG ▷ C7×C9×C149
UCSC1

24 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 165
transitive degreeμt(G) = 9387

A minimal faithful permutation representation — 2 generators on 165 points:

(1,2,3,4,5,6,7,8,9)(10,11,12,13,14,15,16)(17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165);(2,9)(3,8)(4,7)(5,6)(11,16)(12,15)(13,14)(18,165)(19,164)(20,163)(21,162)(22,161)(23,160)(24,159)(25,158)(26,157)(27,156)(28,155)(29,154)(30,153)(31,152)(32,151)(33,150)(34,149)(35,148)(36,147)(37,146)(38,145)(39,144)(40,143)(41,142)(42,141)(43,140)(44,139)(45,138)(46,137)(47,136)(48,135)(49,134)(50,133)(51,132)(52,131)(53,130)(54,129)(55,128)(56,127)(57,126)(58,125)(59,124)(60,123)(61,122)(62,121)(63,120)(64,119)(65,118)(66,117)(67,116)(68,115)(69,114)(70,113)(71,112)(72,111)(73,110)(74,109)(75,108)(76,107)(77,106)(78,105)(79,104)(80,103)(81,102)(82,101)(83,100)(84,99)(85,98)(86,97)(87,96)(88,95)(89,94)(90,93)(91,92)

Polycyclic presentation:

2,3,7,149,3|b^3=e^2,b^a=b^2e,c^a=c^6,d^a=d^148,e^a=e^2

Conjugacy classes & character table

4695 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD63×D149, D7×D1341, D9×D1043, …
maximal normal subgroup ofD63×D149, D7×D1341, D9×D1043, …
maximal quotient ofDic9387, C2×D9387, D28161

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(18774, 9);