Finite Group Databasebeta

#34204405

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C23

Aliases

No aliases for this group.

Splittings

FittingC79×#1389 ⋊ C2
SylowC79 ⋊ #12829

Subgroups

subgroupG/H
centerC4#19098566
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#1389C2
socleC2×C79#1804
prime radicalC2×#14579183C22
cosocleC22×C8×C79C23
hypercenter#1389D79
hypocenterC79#12829
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C4 ◁ C22×C4 ◁ C22×C8 ◁ #1389

378 conjugacy classes of subgroups; only the 103 normal subgroups are shown.

normal subgroups only

This group has 378 conjugacy classes of subgroups — too many to draw. Only its 103 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 — 3 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)(80,83)(81,88)(82,93)(84,103)(85,108)(86,98)(87,109)(89,113)(90,116)(91,117)(92,118)(94,126)(95,121)(96,129)(97,101)(99,105)(100,104)(102,136)(106,138)(107,112)(110,141)(111,142)(114,133)(115,143)(119,140)(120,124)(122,128)(123,127)(125,131)(130,134)(132,137)(135,139);(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)(80,82,85,96,86,95,104,127)(81,87,107,119,89,92,91,111)(83,93,108,129,98,121,100,123)(84,102,105,137,106,94,125,128)(88,109,112,140,113,118,117,142)(90,115,134,135,114,110,101,124)(97,120,116,143,130,139,133,141)(99,132,138,126,131,122,103,136);(80,81)(82,92,95,87)(83,97)(84,101)(85,107)(86,89)(88,99)(90,105)(91,104)(93,120,121,139)(94,124,102,135)(96,111,127,119)(98,130)(100,133)(103,117)(106,134)(108,116)(109,122,118,132)(110,128,115,137)(112,138)(113,131)(114,125)(123,141,129,143)(126,140,136,142)

Polycyclic presentation:

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

Conjugacy classes & character table

1294 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 85704);