Finite Group Databasebeta

#34209186

order20224
automorphism?
homologyAbelianization (H1) = C23 · Schur multiplier (H2) = C2

Aliases

No aliases for this group.

Splittings

FittingC79×#1422 ⋊ C2
SylowC79 ⋊ #13709

Subgroups

subgroupG/H
centerC2#23765548
commutator, cosocleC2×C16×C79C23
FrattiniC2×C16C22×D79
FittingC79×#1422C2
socleC2×C79#2226
prime radical#19098995C22
hypercenter#1422D79
hypocenterC79#13709
LCSG ▷ C2×C16×C79 ▷ C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C2×C4 ◁ C4×C8 ◁ C4×C16 ◁ #1422

154 conjugacy classes of subgroups; only the 57 normal subgroups are shown.

normal subgroups only

This group has 154 conjugacy classes of subgroups — too many to draw. Only its 57 normal subgroups are shown.

Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.

Full subgroup data →

Presentation

minimal degreeμ(G) = 143
transitive degreeμt(G) = 5056

A minimal faithful permutation representation — 3 generators on 143 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)(80,83)(81,89)(82,94)(84,99)(85,107)(86,111)(87,102)(88,112)(90,115)(91,121)(92,123)(93,118)(95,126)(96,130)(97,128)(98,132)(100,120)(101,105)(103,117)(104,139)(106,137)(108,114)(109,127)(110,116)(113,133)(119,125)(122,135)(124,134)(129,143)(131,138)(136,141)(140,142);(80,82,84,95,87,97,105,86)(81,88,90,92,93,110,103,124)(83,94,99,126,102,128,101,111)(85,96,104,120,109,131,140,108)(89,112,115,123,118,116,117,134)(91,113,119,106,122,141,129,132)(98,121,133,125,137,135,136,143)(100,127,138,142,114,107,130,139);(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)(80,81,87,93)(82,92,97,124)(83,98)(84,103,105,90)(85,106,109,132)(86,110,95,88)(89,114)(91,120,122,108)(94,125)(96,129,131,119)(99,136)(100,118)(101,133)(102,137)(104,113,140,141)(107,123)(111,135)(112,139)(115,138)(116,142)(117,130)(121,126)(127,134)(128,143)

Polycyclic presentation:

2^8,79|a^2=dg,b^2=d,d^2=h,e^2=fgh,f^2=gh,g^2=h,b^a=bd,c^a=ce,d^a=dh,e^a=ef,f^a=fg,g^a=gh,i^a=i^78,e^c=efh,f^c=fg,g^c=gh,i^c=i^78

Conjugacy classes & character table

2221 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 90485);