Finite Group Databasebeta

D7865 #30628495

order15730
automorphism?
homologyAbelianization (H1) = C2 · Schur multiplier (H2) = C1

Aliases

dihedralD7865
unambiguous semidirect productC5⋊D1573
unambiguous semidirect productC13⋊D605
unambiguous semidirect productC121⋊D65

Splittings

Fitting, derived, HallC5×C13×C121 ⋊ C2
HallC13×C121 ⋊ D5
HallC5×C121 ⋊ D13
SylowC121 ⋊ D65
HallC5×C13 ⋊ D121
SylowC13 ⋊ D605
SylowC5 ⋊ D1573

Subgroups

subgroupG/H
center, hypercenterC1G
commutator, Fitting, cosocle, hypocenterC5×C13×C121C2
FrattiniC11D715
socleC5×C11×C13D11
LCSG ▷ C5×C13×C121
UCSC1

24 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 139
transitive degreeμt(G) = 7865

A minimal faithful permutation representation — 2 generators on 139 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);(2,5)(3,4)(7,126)(8,125)(9,124)(10,123)(11,122)(12,121)(13,120)(14,119)(15,118)(16,117)(17,116)(18,115)(19,114)(20,113)(21,112)(22,111)(23,110)(24,109)(25,108)(26,107)(27,106)(28,105)(29,104)(30,103)(31,102)(32,101)(33,100)(34,99)(35,98)(36,97)(37,96)(38,95)(39,94)(40,93)(41,92)(42,91)(43,90)(44,89)(45,88)(46,87)(47,86)(48,85)(49,84)(50,83)(51,82)(52,81)(53,80)(54,79)(55,78)(56,77)(57,76)(58,75)(59,74)(60,73)(61,72)(62,71)(63,70)(64,69)(65,68)(66,67)(128,139)(129,138)(130,137)(131,136)(132,135)(133,134)

Polycyclic presentation:

2,5,11,13,11|c^11=e^10,b^a=b^4,c^a=c^10e,d^a=d^12,e^a=e^10

Conjugacy classes & character table

3934 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD13×D605, D65×D121, D5×D1573, …
maximal normal subgroup ofD13×D605, D65×D121, D5×D1573, …
maximal quotient ofDic7865, C2×D7865

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(15730, 12);