Finite Group Databasebeta

D489 #11758241

order978
isoclinismisoclinic class of D489
automorphismAut(G) order 158436
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD489
unambiguous semidirect productC3⋊D163
unambiguous semidirect productC163⋊D3

Splittings

Fitting, socle, derived, HallC3×C163 ⋊ C2
SylowC163 ⋊ D3
SylowC3 ⋊ D163

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC3×C163C2
LCSG ▷ C3×C163
UCSC1

8 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 166
transitive degreeμt(G) = 489

A minimal faithful permutation representation — 2 generators on 166 points:

(1,2,3)(4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166);(2,3)(5,166)(6,165)(7,164)(8,163)(9,162)(10,161)(11,160)(12,159)(13,158)(14,157)(15,156)(16,155)(17,154)(18,153)(19,152)(20,151)(21,150)(22,149)(23,148)(24,147)(25,146)(26,145)(27,144)(28,143)(29,142)(30,141)(31,140)(32,139)(33,138)(34,137)(35,136)(36,135)(37,134)(38,133)(39,132)(40,131)(41,130)(42,129)(43,128)(44,127)(45,126)(46,125)(47,124)(48,123)(49,122)(50,121)(51,120)(52,119)(53,118)(54,117)(55,116)(56,115)(57,114)(58,113)(59,112)(60,111)(61,110)(62,109)(63,108)(64,107)(65,106)(66,105)(67,104)(68,103)(69,102)(70,101)(71,100)(72,99)(73,98)(74,97)(75,96)(76,95)(77,94)(78,93)(79,92)(80,91)(81,90)(82,89)(83,88)(84,87)(85,86)

Polycyclic presentation:

2,3,163|b^a=b^2,c^a=c^162

Conjugacy classes & character table

246 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD3×D163, C2×D489, D1467, …
maximal normal subgroup ofD3×D163, C2×D489, C3⋊(D163⋊C3), …
maximal quotient ofDic489, C2×D489, D1467, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(978, 5);