Finite Group Databasebeta

#34206135

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

Aliases

No aliases for this group.

Splittings

FittingC79×#2155 ⋊ C2
SylowC79 ⋊ #13140

Subgroups

subgroupG/H
centerC4#19098883
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#2155C2
socleC2×C79#1926
prime radicalC2×#14579183C22
cosocleC22×C8×C79C23
hypercenter#2155D79
hypocenterC79#13140
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C4 ◁ C22×C4 ◁ C22×C8 ◁ #2155

314 conjugacy classes of subgroups; only the 95 normal subgroups are shown.

normal subgroups only

This group has 314 conjugacy classes of subgroups — too many to draw. Only its 95 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) = 2528

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

Polycyclic presentation:

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

Conjugacy classes & character table

1288 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 87434);