Finite Group Databasebeta

#34175897

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7442

Subgroups

subgroupG/H
centerC22#19098349
commutatorC2×C4⋊C4×C79C2×C4
Frattini#382C2×D79
FittingC79×#1324C2
socleC22×C79AΣL(1,𝔽16)
prime radicalC23×C79#99
cosocle#382×C79C22
hypercenter#1324D79
hypocenterC79#7442
LCSG ▷ C2×C4⋊C4×C79 ▷ C22×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C23 ◁ C22×C4 ◁ #382 ◁ #1324

194 conjugacy classes of subgroups; only the 41 normal subgroups are shown.

normal subgroups only

This group has 194 conjugacy classes of subgroups — too many to draw. Only its 41 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:

(1,2)(3,7)(4,6)(5,8)(9,10,12,20,13,16,22,15)(11,18,17,24,19,14,21,23)(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);(2,5,6,7)(10,14,15,23,16,18,20,24)(11,17,19,21)(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=eg,c^2=fg,d^2=g,e^2=h,b^a=bc,c^a=ce,e^a=eg,i^a=i^78,c^b=cf,d^b=defgh,e^b=eh,f^b=fh,g^b=gh,i^b=i^78,d^c=dgh,e^c=eh

Conjugacy classes & character table

1045 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 57196);