Finite Group Databasebeta

#34188246

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C2×C4

Aliases

No aliases for this group.

Splittings

FittingC2×#322×C79 ⋊ C2
SylowC79 ⋊ #9863

Subgroups

subgroupG/H
centerC2×C4#14579158
commutatorC42×C79C22×C4
FrattiniC2×C42C22×D79
FittingC2×#322×C79C2
socleC22×C79#390
prime radical#19099113C22
cosocleC2×C42×C79C23
hypercenterC2×#322D79
hypocenterC79#9863
LCSG ▷ C42×C79 ▷ C22×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C2×C42 ◁ C2×#322

412 conjugacy classes of subgroups; only the 123 normal subgroups are shown.

normal subgroups only

This group has 412 conjugacy classes of subgroups — too many to draw. Only its 123 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) = 111
transitive degreeμt(G) = 10112

A minimal faithful permutation representation — 3 generators on 111 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)(81,86)(85,93)(87,91)(88,94)(96,98,99,108,101,107,100,109)(97,103,104,110,105,111,102,106);(80,82,83,89,84,90,92,95)(81,85,87,88,86,93,91,94)(97,102,105,104)(98,107)(103,110,111,106)(108,109);(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)(82,88)(83,91)(84,86)(85,89)(87,92)(90,94)(93,95)(96,97,100,104,101,105,99,102)(98,106,109,103,107,110,108,111)

Polycyclic presentation:

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

Conjugacy classes & character table

3172 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 69545);