Finite Group Databasebeta

#34175696

order20224
automorphism?
homologyAbelianization (H1) = C2×C8 · Schur multiplier (H2) = C22

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7375

Subgroups

subgroupG/H
centerC22#19098351
commutatorC2×D4×C79C2×C8
Frattini#390C2×D79
FittingC79×#1270C2
socleC22×C79AΣL(1,𝔽16)
prime radicalC22×D4×C79C2×C4
cosocle#390×C79C22
hypercenter#1270D79
hypocenterC79#7375
LCSG ▷ C2×D4×C79 ▷ C2×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C23 ◁ C22×C4 ◁ #390 ◁ #1270

228 conjugacy classes of subgroups; only the 43 normal subgroups are shown.

normal subgroups only

This group has 228 conjugacy classes of subgroups — too many to draw. Only its 43 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) = 2528

A minimal faithful permutation representation — 2 generators on 103 points:

(9,11,12,19,13,20,21,24)(10,14,16,18,17,22,15,23)(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)(83,84)(85,86)(87,88)(89,90)(91,92)(93,94)(95,96)(97,98)(99,100)(101,102);(1,2,3,5,4,6,7,8)(9,10)(11,18,19,14)(12,16,21,15)(13,17)(20,23,24,22)(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)(84,85)(86,87)(88,89)(90,91)(92,93)(94,95)(96,97)(98,99)(100,101)(102,103)

Polycyclic presentation:

2^8,79|a^2=d,b^2=e,d^2=f,e^2=h,b^a=bc,c^a=ce,e^a=eg,g^a=gh,i^a=i^78,c^b=cg,d^b=deh,g^b=gh,i^b=i^78,d^c=dgh,e^c=eh,e^d=eh

Conjugacy classes & character table

1516 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 56995);