Finite Group Databasebeta

#34208807

order20224
automorphism?
homologyAbelianization (H1) = C22×C8 · Schur multiplier (H2) = C2

Aliases

No aliases for this group.

Splittings

FittingC79×#1422 ⋊ C2
SylowC79 ⋊ #13642

Subgroups

subgroupG/H
centerC8#14579119
commutatorC2×C4×C79C22×C8
FrattiniC2×C16C22×D79
FittingC79×#1422C2
socleC2×C79#2163
prime radicalC22×D79M32
cosocleC2×C16×C79C23
hypercenter#1422D79
hypocenterC79#13642
LCSG ▷ C2×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C8 ◁ C2×C16 ◁ #1422

170 conjugacy classes of subgroups; only the 75 normal subgroups are shown.

normal subgroups only

This group has 170 conjugacy classes of subgroups — too many to draw. Only its 75 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) = 2528

A minimal faithful permutation representation — 3 generators on 111 points:

(1,2)(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)(81,87,86,90)(82,91)(88,102,97,100)(89,101,98,104)(92,105)(93,99)(103,111,108,110)(106,109);(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)(81,86)(82,91)(87,90)(89,98)(92,105)(93,99)(101,104)(106,109);(80,81,82,88,83,89,92,103,84,90,93,102,94,104,106,111,85,86,91,97,95,98,105,108,96,87,99,100,107,101,109,110)

Polycyclic presentation:

2^8,79|a^2=e,c^2=d,e^2=f,f^2=g,g^2=h,b^a=bd,c^a=cg,d^a=dh,e^b=eh,i^b=i^78,e^c=eh,i^c=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, 90106);