Finite Group Databasebeta

#34199958

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

Aliases

No aliases for this group.

Splittings

FittingC79×#1372 ⋊ C2
SylowC79 ⋊ #12034

Subgroups

subgroupG/H
centerC2×C4D8×D79
commutatorC2×C8×C79C22×C4
FrattiniC4×C8C22×D79
FittingC79×#1372C2
socleC22×C79C2×#107
prime radicalC22×D79#107
cosocleC4×C8×C79C23
hypercenter#1372D79
hypocenterC79#12034
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C42 ◁ C4×C8 ◁ #1372

204 conjugacy classes of subgroups; only the 83 normal subgroups are shown.

normal subgroups only

This group has 204 conjugacy classes of subgroups — too many to draw. Only its 83 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)(82,88)(85,91)(89,94)(92,95)(96,99,102,101)(97,104,106,116)(98,109,112,111)(100,113,115,108)(103,117,118,121)(105,114,119,127)(107,120,122,126)(110,124,125,123);(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)(80,82)(81,85)(83,89)(84,88)(86,92)(87,91)(90,94)(93,95)(96,98,108,123,101,111,115,125,102,112,113,124,99,109,100,110)(97,103,114,120,104,117,119,122,106,118,127,126,116,121,105,107);(80,81,83,86,84,87,90,93)(82,85,89,92,88,91,94,95)(96,97)(98,107)(99,104)(100,114)(101,116)(102,106)(103,110)(105,108)(109,120)(111,126)(112,122)(113,119)(115,127)(117,124)(118,125)(121,123)

Polycyclic presentation:

2^8,79|a^2=e,b^2=df,c^2=h,d^2=fh,e^2=g,f^2=h,b^a=bd,d^a=df,f^a=fh,c^b=cg,i^b=i^78,i^c=i^78

Conjugacy classes & character table

1774 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 81257);