Finite Group Databasebeta

C2×D7781 #44528055

order31124
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD15562
direct productC2×D7781
unambiguous semidirect product(C2×C31)⋊D251
unambiguous semidirect product(C2×C251)⋊D31

Splittings

Fitting, socleC2×C31×C251 ⋊ C2
derived, HallC31×C251 ⋊ C22
SylowC251 ⋊ C2×D31
SylowC31 ⋊ C2×D251

Subgroups

subgroupG/H
center, hypercenterC2D7781
commutator, cosocle, hypocenterC31×C251C22
FrattiniC1G
Fitting, socleC2×C31×C251C2
LCSG ▷ C31×C251
UCSC1 ◁ C2

20 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 284
transitive degreeμt(G) = 15562

A minimal faithful permutation representation — 2 generators on 284 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)(34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284);(4,33)(5,32)(6,31)(7,30)(8,29)(9,28)(10,27)(11,26)(12,25)(13,24)(14,23)(15,22)(16,21)(17,20)(18,19)(35,284)(36,283)(37,282)(38,281)(39,280)(40,279)(41,278)(42,277)(43,276)(44,275)(45,274)(46,273)(47,272)(48,271)(49,270)(50,269)(51,268)(52,267)(53,266)(54,265)(55,264)(56,263)(57,262)(58,261)(59,260)(60,259)(61,258)(62,257)(63,256)(64,255)(65,254)(66,253)(67,252)(68,251)(69,250)(70,249)(71,248)(72,247)(73,246)(74,245)(75,244)(76,243)(77,242)(78,241)(79,240)(80,239)(81,238)(82,237)(83,236)(84,235)(85,234)(86,233)(87,232)(88,231)(89,230)(90,229)(91,228)(92,227)(93,226)(94,225)(95,224)(96,223)(97,222)(98,221)(99,220)(100,219)(101,218)(102,217)(103,216)(104,215)(105,214)(106,213)(107,212)(108,211)(109,210)(110,209)(111,208)(112,207)(113,206)(114,205)(115,204)(116,203)(117,202)(118,201)(119,200)(120,199)(121,198)(122,197)(123,196)(124,195)(125,194)(126,193)(127,192)(128,191)(129,190)(130,189)(131,188)(132,187)(133,186)(134,185)(135,184)(136,183)(137,182)(138,181)(139,180)(140,179)(141,178)(142,177)(143,176)(144,175)(145,174)(146,173)(147,172)(148,171)(149,170)(150,169)(151,168)(152,167)(153,166)(154,165)(155,164)(156,163)(157,162)(158,161)(159,160)

Conjugacy classes & character table

7784 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD31124
maximal normal subgroup ofD31124
maximal quotient ofDic15562, D31124

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(31124, 9);