Finite Group Databasebeta

#34175437

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7266

Subgroups

subgroupG/H
centerC22#19098302
commutatorC42×C79C42
FrattiniC2×#97C2×D79
FittingC2×#347×C79C2
socleC22×C79#329
prime radicalC23×C79#100
cosocleC2×#97×C79C22
hypercenterC2×#347D79
hypocenterC79#7266
LCSG ▷ C42×C79 ▷ C2×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C22×C4 ◁ C2×#97 ◁ C2×#347

218 conjugacy classes of subgroups; only the 79 normal subgroups are shown.

normal subgroups only

This group has 218 conjugacy classes of subgroups — too many to draw. Only its 79 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) = 5056

A minimal faithful permutation representation — 2 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)(84,85,86,90,87,92,93,99,88,91,94,98,95,89,96,97);(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)(80,81,82,83)(85,89)(86,93)(87,95)(90,98)(91,92)(94,96)

Polycyclic presentation:

2^8,79|a^2=d,b^2=e,c^2=f,e^2=g,g^2=h,b^a=bc,c^a=cf,e^a=efg,g^a=gh,i^a=i^78,c^b=cg,f^b=fh,e^c=eh

Conjugacy classes & character table

1756 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 56736);