Finite Group Databasebeta

#34205376

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C24

Aliases

No aliases for this group.

Splittings

FittingC79×#1382 ⋊ C2
SylowC79 ⋊ #13019

Subgroups

subgroupG/H
centerC22#19098698
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#1382C2
socleC22×C79#447
prime radicalC22×D632C22
cosocleC22×C8×C79C23
hypercenter#1382D79
hypocenterC79#13019
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C22×C4 ◁ C22×C8 ◁ #1382

496 conjugacy classes of subgroups; only the 107 normal subgroups are shown.

normal subgroups only

This group has 496 conjugacy classes of subgroups — too many to draw. Only its 107 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) = 115
transitive degreeμt(G) = 5056

A minimal faithful permutation representation — 3 generators on 115 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)(85,93)(87,104)(88,89)(90,105)(92,109)(94,114)(95,97)(96,106)(98,112)(99,100)(101,107)(102,108)(110,113)(111,115);(80,82,83,81)(84,86)(85,92)(87,100)(88,101)(89,107)(90,108)(91,103)(93,109)(94,98)(95,110)(96,115)(97,113)(99,104)(102,105)(106,111)(112,114);(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)(80,81,83,82)(84,85,89,95,105,114,104,94,91,97,87,93,90,96,88,106)(86,98,101,112,108,110,100,92,103,111,99,115,102,109,107,113)

Polycyclic presentation:

2^8,79|a^2=f,b^2=dfgh,d^2=gh,e^2=g,f^2=gh,g^2=h,b^a=bd,c^a=ce,e^a=eh,i^a=i^78,d^b=dg,e^b=eg,f^b=fg,g^b=gh,d^c=dg,e^c=egh,f^c=fg,g^c=gh,i^c=i^78

Conjugacy classes & character table

1762 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 86675);