Finite Group Databasebeta

#34183291

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

Aliases

No aliases for this group.

Splittings

FittingC2×#323×C79 ⋊ C2
SylowC79 ⋊ #9020

Subgroups

subgroupG/H
centerC23#14579131
commutatorC22×C4×C79C22×C4
FrattiniC23×C4C22×D79
FittingC2×#323×C79C2
socleC23×C79#120
prime radicalC2×#19098472C2
cosocleC23×C4×C79C23
hypercenterC2×#323D79
hypocenterC79#9020
LCSG ▷ C22×C4×C79 ▷ C22×C79 ▷ C79
UCSC1 ◁ C23 ◁ C23×C4 ◁ C2×#323

1224 conjugacy classes of subgroups; only the 127 normal subgroups are shown.

normal subgroups only

This group has 1224 conjugacy classes of subgroups — too many to draw. Only its 127 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) = 99
transitive degreeμt(G) = 2528

A minimal faithful permutation representation — 3 generators on 99 points:

(1,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,79,77,75,73,71,69,67,65,63,61,59,57,55,53,51,49,47,45,43,41,39,37,35,33,31,29,27,25,23,21,19,17,15,13,11,9,7,5,3)(84,86,87,91)(85,88,89,90)(95,97)(98,99);(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)(80,82,83,81)(84,85)(86,88)(87,89)(90,91)(92,94,96,93)(95,98,97,99);(80,81,83,82)(84,85)(86,90,91,88)(87,89)(92,93,97,99,96,94,95,98)

Polycyclic presentation:

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

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, 64590);