Finite Group Databasebeta

#34180765

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C25

Aliases

No aliases for this group.

Splittings

FittingC79×#1782 ⋊ C2
SylowC79 ⋊ #8517

Subgroups

subgroupG/H
centerC22#19098418
commutatorC22×C4×C79C22×C4
FrattiniC23×C4C22×D79
FittingC79×#1782C2
socleC22×C79#379
prime radicalC2×#19099141C2
cosocleC23×C4×C79C23
hypercenter#1782D79
hypocenterC79#8517
LCSG ▷ C22×C4×C79 ▷ C22×C79 ▷ C79
UCSC1 ◁ C22 ◁ C23×C4 ◁ #1782

1040 conjugacy classes of subgroups; only the 115 normal subgroups are shown.

normal subgroups only

This group has 1040 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) = 103
transitive degreeμt(G) = 5056

A minimal faithful permutation representation — 3 generators on 103 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)(88,90)(89,94)(91,98)(92,99)(93,95)(96,97)(100,101)(102,103);(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)(80,82,83,87)(81,84,85,86)(88,90)(89,93)(91,100)(92,99)(94,95)(96,102)(97,103)(98,101);(80,81)(82,86,87,84)(83,85)(88,89)(90,97,99,94)(91,95)(92,96)(93,98,102,100)(101,103)

Polycyclic presentation:

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

Conjugacy classes & character table

1282 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 62064);