Finite Group Databasebeta

#34204802

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C23

Aliases

No aliases for this group.

Splittings

FittingC79×#1382 ⋊ C2
SylowC79 ⋊ #12925

Subgroups

subgroupG/H
centerC22#19098698
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#1382C2
socleC22×C79#447
prime radicalC2×#11929624D4
cosocleC22×C8×C79C23
hypercenter#1382D79
hypocenterC79#12925
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C22×C4 ◁ C22×C8 ◁ #1382

400 conjugacy classes of subgroups; only the 113 normal subgroups are shown.

normal subgroups only

This group has 400 conjugacy classes of subgroups — too many to draw. Only its 113 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) = 115
transitive degreeμt(G) = 10112

A minimal faithful permutation representation — 3 generators on 115 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)(84,86)(85,91)(87,96)(88,98)(89,99)(90,92)(93,109)(94,110)(95,105)(97,102)(100,107)(101,103)(104,113)(106,114)(108,111)(112,115);(80,82,83,81)(84,86)(85,90)(87,101)(88,97)(89,99)(91,92)(93,106)(94,108)(95,100)(96,103)(98,102)(104,112)(105,107)(109,114)(110,111)(113,115);(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)(80,81,83,82)(84,85)(86,95)(87,100)(88,105)(89,94)(90,96)(91,97)(92,103)(93,102)(98,110)(99,109)(101,106)(104,114)(107,112)(108,113)(111,115)

Polycyclic presentation:

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

Conjugacy classes & character table

1762 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 86101);