Finite Group Databasebeta

#34207296

order20224
automorphism?
homologyAbelianization (H1) = C23 · Schur multiplier (H2) = C24

Aliases

No aliases for this group.

Splittings

FittingC2×#454×C79 ⋊ C2
SylowC79 ⋊ #13357

Subgroups

subgroupG/H
centerC22#19098749
commutator, cosocleC22×Q8×C79C23
FrattiniC22×Q8C22×D79
FittingC2×#454×C79C2
socleC22×C79B(4,𝔽2)
hypercenterC2×#454D79
hypocenterC79#13357
LCSG ▷ C22×Q8×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C23 ◁ C22×Q8 ◁ C2×#454

772 conjugacy classes of subgroups; only the 81 normal subgroups are shown.

normal subgroups only

This group has 772 conjugacy classes of subgroups — too many to draw. Only its 81 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:

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

Polycyclic presentation:

2^8,79|d^2=h,f^2=h,b^a=bd,c^a=ce,d^a=dh,f^a=fgh,c^b=cf,d^b=dh,f^b=fh,g^b=gh,d^c=dg,f^c=fh,i^c=i^78,f^d=fh

Conjugacy classes & character table

1279 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 88595);