Finite Group Databasebeta

#34200191

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

Aliases

No aliases for this group.

Splittings

FittingC79×#1372 ⋊ C2
SylowC79 ⋊ #12073

Subgroups

subgroupG/H
centerC2×C4D8×D79
commutatorC2×C8×C79C22×C4
FrattiniC4×C8C22×D79
FittingC79×#1372C2
socleC22×C79C4×D8
prime radicalC2×D1264C4
cosocleC4×C8×C79C23
hypercenter#1372D79
hypocenterC79#12073
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C42 ◁ C4×C8 ◁ #1372

240 conjugacy classes of subgroups; only the 73 normal subgroups are shown.

normal subgroups only

This group has 240 conjugacy classes of subgroups — too many to draw. Only its 73 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) = 10112

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)(80,82,83,85,84,86,87,81)(88,90,92,93)(89,95,97,101)(91,98,100,99)(94,102,103,96);(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)(89,94)(90,93)(91,99)(95,96)(97,103)(98,100)(101,102);(80,81,83,82,84,85,87,86)(88,89,92,97)(90,95,93,101)(91,94,100,103)(96,98,102,99)

Polycyclic presentation:

2^8,79|a^2=e,c^2=e,d^2=fh,e^2=g,f^2=h,b^a=bd,c^a=cg,d^a=df,f^a=fh,c^b=ch,d^b=df,f^b=fh,i^b=i^78,i^c=i^78

Conjugacy classes & character table

1774 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 81490);