Finite Group Databasebeta

#34203240

order20224
automorphism?
homologyAbelianization (H1) = C2×C42 · Schur multiplier (H2) = C24×C4

Aliases

No aliases for this group.

Splittings

FittingC79×#1393 ⋊ C2
SylowC79 ⋊ #12582

Subgroups

subgroupG/H
centerC22#99×D79
commutatorC2×C4×C79C2×C42
FrattiniC22×D4C22×D79
FittingC79×#1393C2
socleC22×C79C2×#99
prime radicalC22×D4×D79C22
cosocleC22×D4×C79C23
hypercenter#1393D79
hypocenterC79#12582
LCSG ▷ C2×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C23 ◁ C22×D4 ◁ #1393

1026 conjugacy classes of subgroups; only the 151 normal subgroups are shown.

normal subgroups only

This group has 1026 conjugacy classes of subgroups — too many to draw. Only its 151 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:

(2,3)(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)(86,93)(89,97)(92,98)(94,99);(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)(80,81,82,83)(84,86)(85,89,91,97)(87,94)(88,93)(90,92,95,98)(96,99);(84,85)(86,92,93,98)(87,95,96,90)(88,91)(89,94)(97,99)

Polycyclic presentation:

2^8,79|a^2=e,b^2=f,d^2=h,b^a=bd,d^a=dg,f^a=fh,g^a=gh,c^b=ch,e^b=egh,i^c=i^78,e^d=eh

Conjugacy classes & character table

1060 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 84539);