Finite Group Databasebeta

#34189885

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #10127

Subgroups

subgroupG/H
centerC22#19098472
commutator, cosocleC2×C42×C79C23
FrattiniC2×C42C22×D79
FittingC79×#1470C2
socleC22×C79#392
prime radicalC23×C79#121
hypercenter#1470D79
hypocenterC79#10127
LCSG ▷ C2×C42×C79 ▷ C22×C79 ▷ C79
UCSC1 ◁ C22 ◁ C2×C42 ◁ #1470

420 conjugacy classes of subgroups; only the 79 normal subgroups are shown.

normal subgroups only

This group has 420 conjugacy classes of subgroups — too many to draw. Only its 79 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) = 127
transitive degreeμt(G) = 10112

A minimal faithful permutation representation — 3 generators on 127 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)(80,83)(81,86)(82,88)(84,93)(85,91)(87,95)(89,90)(92,94)(96,99,102,115)(97,104,106,121)(98,108,110,126)(100,114,101,113)(103,117,118,127)(105,123,116,120)(107,124,122,119)(109,112,111,125);(80,82,85,81)(83,88,91,86)(84,87,94,89)(90,93,95,92)(96,98,102,110)(97,103,106,118)(99,112,115,125)(100,111,101,109)(104,119,121,124)(105,122,116,107)(108,113,126,114)(117,123,127,120);(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)(80,81,85,82)(83,90,91,95)(84,89,94,87)(86,93,88,92)(96,97,102,106)(98,107,110,122)(99,104,115,121)(100,116,101,105)(103,111,118,109)(108,119,126,124)(112,127,125,117)(113,123,114,120)

Polycyclic presentation:

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

Conjugacy classes & character table

1279 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 71184);