Finite Group Databasebeta

C2×D7785 #44528140

order31140
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD15570
direct productC2×D7785
unambiguous semidirect product(C2×C5)⋊D1557
unambiguous semidirect product(C2×C9)⋊D865
unambiguous semidirect product(C2×C173)⋊D45

Splittings

FittingC2×C5×C9×C173 ⋊ C2
derived, HallC5×C9×C173 ⋊ C22
HallC9×C173 ⋊ C2×D5
HallC5×C173 ⋊ C2×D9
SylowC173 ⋊ C2×D45
HallC5×C9 ⋊ C2×D173
SylowC9 ⋊ C2×D865
SylowC5 ⋊ C2×D1557

Subgroups

subgroupG/H
center, hypercenterC2D7785
commutator, cosocle, hypocenterC5×C9×C173C22
FrattiniC3C2×D2595
FittingC2×C5×C9×C173C2
socleC2×C3×C5×C173D3
LCSG ▷ C5×C9×C173
UCSC1 ◁ C2

60 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 189
transitive degreeμt(G) = 15570

A minimal faithful permutation representation — 2 generators on 189 points:

(1,2)(3,4,5,6,7,8,9,10,11)(12,13,14,15,16)(17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189);(4,11)(5,10)(6,9)(7,8)(13,16)(14,15)(18,189)(19,188)(20,187)(21,186)(22,185)(23,184)(24,183)(25,182)(26,181)(27,180)(28,179)(29,178)(30,177)(31,176)(32,175)(33,174)(34,173)(35,172)(36,171)(37,170)(38,169)(39,168)(40,167)(41,166)(42,165)(43,164)(44,163)(45,162)(46,161)(47,160)(48,159)(49,158)(50,157)(51,156)(52,155)(53,154)(54,153)(55,152)(56,151)(57,150)(58,149)(59,148)(60,147)(61,146)(62,145)(63,144)(64,143)(65,142)(66,141)(67,140)(68,139)(69,138)(70,137)(71,136)(72,135)(73,134)(74,133)(75,132)(76,131)(77,130)(78,129)(79,128)(80,127)(81,126)(82,125)(83,124)(84,123)(85,122)(86,121)(87,120)(88,119)(89,118)(90,117)(91,116)(92,115)(93,114)(94,113)(95,112)(96,111)(97,110)(98,109)(99,108)(100,107)(101,106)(102,105)(103,104)

Conjugacy classes & character table

7788 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD31140
maximal normal subgroup ofD31140
maximal quotient ofDic15570, D31140

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(31140, 30);