Finite Group Databasebeta

#34180526

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

Aliases

No aliases for this group.

Splittings

FittingC79×#1536 ⋊ C2
SylowC79 ⋊ #8476

Subgroups

subgroupG/H
centerC22#19098418
commutatorC22×C4×C79C22×C4
FrattiniC2×C42C22×D79
FittingC79×#1536C2
socleC22×C79#379
prime radical#23777320C2
cosocleC2×C42×C79C23
hypercenter#1536D79
hypocenterC79#8476
LCSG ▷ C22×C4×C79 ▷ C22×C79 ▷ C79
UCSC1 ◁ C22 ◁ C2×C42 ◁ #1536

678 conjugacy classes of subgroups; only the 107 normal subgroups are shown.

normal subgroups only

This group has 678 conjugacy classes of subgroups — too many to draw. Only its 107 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)(80,82,84,90)(81,86,85,88)(83,92,91,89)(87,95,93,94)(96,99,101,112)(97,103,105,110)(98,107,109,124)(100,115,116,111)(102,117,118,126)(104,121,113,119)(106,122,120,127)(108,125,114,123);(81,85)(83,91)(86,88)(89,92)(96,98)(97,102)(99,107)(100,114)(101,109)(103,117)(104,120)(105,118)(106,113)(108,116)(110,126)(111,125)(112,124)(115,123)(119,122)(121,127);(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)(80,81,83,87,84,85,91,93)(82,88,89,95,90,86,92,94)(96,97)(98,106)(99,110,112,103)(100,113)(101,105)(102,108)(104,116)(107,122,124,127)(109,120)(111,119,115,121)(114,118)(117,123,126,125)

Polycyclic presentation:

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

Conjugacy classes & character table

1054 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 61825);