Finite Group Databasebeta

#34185890

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #9440

Subgroups

subgroupG/H
centerC22#19098439
commutatorC42×C79C22×C4
FrattiniC2×C42C22×D79
FittingC79×#1506C2
socleC22×C79#386
prime radicalC23×C79#120
cosocleC2×C42×C79C23
hypercenter#1506D79
hypocenterC79#9440
LCSG ▷ C42×C79 ▷ C22×C79 ▷ C79
UCSC1 ◁ C22 ◁ C2×C42 ◁ #1506

434 conjugacy classes of subgroups; only the 89 normal subgroups are shown.

normal subgroups only

This group has 434 conjugacy classes of subgroups — too many to draw. Only its 89 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) = 5056

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

Polycyclic presentation:

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

Conjugacy classes & character table

1288 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 67189);