Finite Group Databasebeta

#34175203

order20224
automorphism?
homologyAbelianization (H1) = C4×C8 · Schur multiplier (H2) = C22

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7177

Subgroups

subgroupG/H
centerC2×C4#14579082
commutatorC8×C79C4×C8
FrattiniC2×C4×C8C2×D79
FittingC4×#108×C79C2
socleC22×C79#340
prime radicalC23×C79#103
cosocleC2×C4×C8×C79C22
hypercenterC4×#108D79
hypocenterC79#7177
LCSG ▷ C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C2×C42 ◁ C2×C4×C8 ◁ C4×#108

238 conjugacy classes of subgroups; only the 119 normal subgroups are shown.

normal subgroups only

This group has 238 conjugacy classes of subgroups — too many to draw. Only its 119 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) = 119
transitive degreeμt(G) = 10112

A minimal faithful permutation representation — 2 generators on 119 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)(80,82,84,87,85,86,83,81)(88,90,93,104,111,103,110,102,94,106,109,118,92,105,91,108)(89,95,98,114,97,117,112,101,100,115,107,119,99,113,96,116);(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)(80,81,83,86,85,87,84,82)(88,89,92,97,94,100,111,99)(90,101,103,114,106,116,105,119)(91,107,109,96,110,98,93,112)(95,104,113,102,115,118,117,108)

Polycyclic presentation:

2^8,79|a^2=d,b^2=e,c^2=f,d^2=g,e^2=fg,f^2=h,b^a=bc,c^a=cf,e^a=efh,f^a=fh,i^a=i^78,c^b=ch,d^b=dh,i^b=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, 56502);