Finite Group Databasebeta

#34181889

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #8775

Subgroups

subgroupG/H
centerC22#19098425
commutatorC22×C4×C79C22×C4
FrattiniC2×C42C22×D79
FittingC79×#1300C2
socleC22×C79#381
prime radicalC23×C79C2×C22⋊C4
cosocleC2×C42×C79C23
hypercenter#1300D79
hypocenterC79#8775
LCSG ▷ C22×C4×C79 ▷ C22×C79 ▷ C79
UCSC1 ◁ C22 ◁ C2×C42 ◁ #1300

384 conjugacy classes of subgroups; only the 85 normal subgroups are shown.

normal subgroups only

This group has 384 conjugacy classes of subgroups — too many to draw. Only its 85 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) = 103
transitive degreeμt(G) = 5056

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

Polycyclic presentation:

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

Conjugacy classes & character table

1525 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 63188);