Finite Group Databasebeta

#34204651

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #12889

Subgroups

subgroupG/H
centerC23C2×#11929609
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#1846C2
socle, prime radicalC23×C79C2×D8
cosocleC22×C8×C79C23
hypercenter#1846D79
hypocenterC79#12889
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C23 ◁ C2×C42 ◁ C2×C4×C8 ◁ #1846

310 conjugacy classes of subgroups; only the 155 normal subgroups are shown.

normal subgroups only

This group has 310 conjugacy classes of subgroups — too many to draw. Only its 155 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) = 123
transitive degreeμt(G) = 20224

A minimal faithful permutation representation — 3 generators on 123 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)(85,89)(88,91)(92,95,96,111,115,108,97,110,99,113,116,109,98,112,107,94)(93,101,102,120,118,123,103,100,105,106,117,122,104,119,114,121);(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)(84,86,87,90)(85,88,89,91)(92,94,107,112,98,109,116,113,99,110,97,108,115,111,96,95)(93,100,114,123,104,120,117,101,105,121,103,119,118,122,102,106);(80,81,82,83)(84,85)(86,88)(87,89)(90,91)(92,93)(94,106)(95,100)(96,114)(97,117)(98,118)(99,105)(101,110)(102,107)(103,116)(104,115)(108,120)(109,119)(111,123)(112,122)(113,121)

Polycyclic presentation:

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

Conjugacy classes & character table

1792 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 85950);