Finite Group Databasebeta

#34187074

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

Aliases

No aliases for this group.

Splittings

FittingC79×#1831 ⋊ C2
SylowC79 ⋊ #9645

Subgroups

subgroupG/H
centerC22×C4C2×C22⋊D79
commutatorC22×C4×C79C22×C4
FrattiniC2×C42C22×D79
FittingC79×#1831C2
socleC23×C79C2×C22⋊C4
prime radicalC22×D316C2×C4
cosocleC2×C42×C79C23
hypercenter#1831D79
hypocenterC79#9645
LCSG ▷ C22×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22×C4 ◁ C43 ◁ #1831

558 conjugacy classes of subgroups; only the 147 normal subgroups are shown.

normal subgroups only

This group has 558 conjugacy classes of subgroups — too many to draw. Only its 147 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) = 107
transitive degreeμt(G) = 10112

A minimal faithful permutation representation — 3 generators on 107 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)(80,81,82,83)(84,87,88,89)(85,90,86,91)(93,98)(97,105)(99,103)(100,106);(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)(84,86,89,91,88,85,87,90)(92,94,95,101,96,102,104,107)(93,97,99,100,98,105,103,106);(81,83)(84,85,89,90,88,86,87,91)(92,93)(94,100)(95,103)(96,98)(97,101)(99,104)(102,106)(105,107)

Polycyclic presentation:

2^8,79|a^2=f,b^2=df,c^2=eg,d^2=g,f^2=h,b^a=bd,c^a=ce,d^a=dg,c^b=ch,i^b=i^78

Conjugacy classes & character table

2248 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 68373);