Finite Group Databasebeta

D973 #14519583

order1946
isoclinismisoclinic class of D973
automorphismAut(G) order 805644
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD973
unambiguous semidirect productC7⋊D139
unambiguous semidirect productC139⋊D7

Splittings

Fitting, socle, derived, HallC7×C139 ⋊ C2
SylowC139 ⋊ D7
SylowC7 ⋊ D139

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC7×C139C2
LCSG ▷ C7×C139
UCSC1

8 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 146
transitive degreeμt(G) = 973

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

Polycyclic presentation:

2,7,139|b^a=b^6,c^a=c^138

Conjugacy classes & character table

488 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD7×D139, C2×D973, D6811, …
maximal normal subgroup ofD7×D139, C2×D973, C7×D973, …
maximal quotient ofDic973, C2×D973, D6811, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1946, 3);