Finite Group Databasebeta

#34207708

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #13423

Subgroups

subgroupG/H
centerC22#19098751
commutator, cosocleC22×D4×C79C23
FrattiniC22×D4C22×D79
FittingC2×#353×C79C2
socleC22×C79B(4,𝔽2)
prime radicalC2×#127×C79C22
hypercenterC2×#353D79
hypocenterC79#13423
LCSG ▷ C22×D4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C23 ◁ C22×D4 ◁ C2×#353

558 conjugacy classes of subgroups; only the 75 normal subgroups are shown.

normal subgroups only

This group has 558 conjugacy classes of subgroups — too many to draw. Only its 75 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) = 99
transitive degreeμt(G) = 2528

A minimal faithful permutation representation — 3 generators on 99 points:

(1,3,4,2)(5,7)(6,10)(8,17)(9,14)(11,20)(12,19)(13,15)(16,18)(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);(1,2)(3,4)(5,6,9,12)(7,10,14,19)(8,16,15,11)(13,18,17,20)(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);(2,3)(7,13)(8,15)(10,18)(11,16)(14,17)(19,20)

Polycyclic presentation:

2^8,79|b^2=h,c^2=d,e^2=h,b^a=bd,c^a=ce,e^a=eh,f^a=fgh,c^b=cf,e^b=eg,i^b=i^78,e^c=eh,g^c=gh,i^c=i^78,f^e=fh

Conjugacy classes & character table

1045 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 89007);