Finite Group Databasebeta

#34205238

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C24

Aliases

No aliases for this group.

Splittings

FittingC2×#358×C79 ⋊ C2
SylowC79 ⋊ #12997

Subgroups

subgroupG/H
centerC22#19098695
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC2×#358×C79C2
socleC22×C79#447
prime radicalC2×#11929624D4
cosocleC22×C8×C79C23
hypercenterC2×#358D79
hypocenterC79#12997
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C22×C4 ◁ C22×C8 ◁ C2×#358

492 conjugacy classes of subgroups; only the 113 normal subgroups are shown.

normal subgroups only

This group has 492 conjugacy classes of subgroups — too many to draw. Only its 113 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) = 115
transitive degreeμt(G) = 10112

A minimal faithful permutation representation — 3 generators on 115 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)(84,86)(85,92)(87,100)(88,101)(89,98)(90,102)(91,106)(93,110)(94,111)(95,109)(96,112)(97,113)(99,104)(103,108)(105,115)(107,114);(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)(80,82,83,81)(85,91)(87,103)(88,104)(89,105)(92,106)(93,94)(95,113)(96,107)(97,109)(98,115)(99,101)(100,108)(110,111)(112,114);(80,81,83,82)(84,85,89,95,104,113,103,91,90,96,87,93,88,94,105,107)(86,97,100,114,99,112,115,109,102,111,98,106,101,92,108,110)

Polycyclic presentation:

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

Conjugacy classes & character table

1762 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 86537);