Finite Group Databasebeta

#34175337

order20224
automorphism?
homologyAbelianization (H1) = C42 · Schur multiplier (H2) = C22

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7227

Subgroups

subgroupG/H
centerC4#19098319
commutatorC2×C8×C79C42
FrattiniC2×#131C2×D79
FittingC79×#1813C2
socleC2×C79#1289
prime radicalC2×#41×C79D4
cosocleC2×#131×C79C22
hypercenter#1813D79
hypocenterC79#7227
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C79
UCSC1 ◁ C4 ◁ C2×C8 ◁ #1813

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

normal subgroups only

This group has 248 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) = 143
transitive degreeμt(G) = 5056

A minimal faithful permutation representation — 2 generators on 143 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)(80,82,85,97,86,98,102,127,87,99,108,132,100,125,83,95)(81,88,91,111,121,131,89,94,93,113,122,140,92,112,107,124)(84,96,104,128,105,129,103,109,106,130,114,136,133,135,101,126)(90,116,118,142,141,139,115,137,120,110,134,138,119,143,117,123);(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)(80,81,84,90)(82,94,96,123)(83,91,101,118)(85,107,104,117)(86,92,105,119)(87,93,106,120)(88,109,110,127)(89,114,115,108)(95,113,126,116)(97,131,128,143)(98,111,129,138)(99,124,130,137)(100,121,133,141)(102,122,103,134)(112,136,139,132)(125,140,135,142)

Polycyclic presentation:

2^8,79|a^2=d,b^2=e,c^2=fgh,e^2=fg,f^2=h,b^a=bc,c^a=cf,e^a=efgh,g^a=gh,i^a=i^78,d^b=dg,i^b=i^78,d^c=dh

Conjugacy classes & character table

1288 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 56636);