Finite Group Databasebeta

#34181720

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C2×C4

Aliases

No aliases for this group.

Splittings

FittingC79×#1276 ⋊ C2
SylowC79 ⋊ #8732

Subgroups

subgroupG/H
centerC2×C4#14579119
commutatorC22×C4×C79C22×C4
FrattiniC2×C42C22×D79
FittingC79×#1276C2
socleC22×C79#381
prime radicalC23×D79C22⋊C4
cosocleC2×C42×C79C23
hypercenter#1276D79
hypocenterC79#8732
LCSG ▷ C22×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C2×C42 ◁ #1276

404 conjugacy classes of subgroups; only the 99 normal subgroups are shown.

normal subgroups only

This group has 404 conjugacy classes of subgroups — too many to draw. Only its 99 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) = 111
transitive degreeμt(G) = 5056

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

Polycyclic presentation:

2^8,79|a^2=f,c^2=d,e^2=g,f^2=h,b^a=bd,c^a=ce,d^a=dg,c^b=ch,f^b=fg,i^b=i^78,f^c=fg,i^c=i^78

Conjugacy classes & character table

2236 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 63019);