Finite Group Databasebeta

#34204339

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

Aliases

No aliases for this group.

Splittings

FittingC79×#1386 ⋊ C2
SylowC79 ⋊ #12817

Subgroups

subgroupG/H
centerC22#102×D79
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#1386C2
socleC22×C79C2×#102
prime radicalC2×#14579183C22
cosocleC22×C8×C79C23
hypercenter#1386D79
hypocenterC79#12817
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C22×C4 ◁ C22×C8 ◁ #1386

430 conjugacy classes of subgroups; only the 115 normal subgroups are shown.

normal subgroups only

This group has 430 conjugacy classes of subgroups — too many to draw. Only its 115 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) = 5056

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

Polycyclic presentation:

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

Conjugacy classes & character table

1294 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 85638);