Finite Group Databasebeta

#34205478

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

Aliases

No aliases for this group.

Splittings

FittingC79×#2141 ⋊ C2
SylowC79 ⋊ #13034

Subgroups

subgroupG/H
centerC2#23763746
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#2141C2
socleC2×C79#1879
prime radicalC2×#14579183C22
cosocleC22×C8×C79C23
hypercenter#2141D79
hypocenterC79#13034
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C22×C4 ◁ C22×C8 ◁ #2141

462 conjugacy classes of subgroups; only the 109 normal subgroups are shown.

normal subgroups only

This group has 462 conjugacy classes of subgroups — too many to draw. Only its 109 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:

(1,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,79,77,75,73,71,69,67,65,63,61,59,57,55,53,51,49,47,45,43,41,39,37,35,33,31,29,27,25,23,21,19,17,15,13,11,9,7,5,3)(80,83,87,104)(81,89,93,119)(82,95,99,134)(84,106,85,110)(86,113,107,103)(88,114,116,140)(90,121,91,125)(92,128,122,118)(94,129,130,142)(96,135,97,136)(98,137,112,133)(100,126,117,123)(101,108,102,111)(105,132,109,131)(115,141,127,139)(120,143,124,138);(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)(81,88,93,116)(83,95)(84,105)(85,109)(86,112)(87,99)(89,114,119,140)(90,120,91,124)(92,127,122,115)(94,126,130,123)(96,108)(97,111)(98,107)(100,129,117,142)(101,136)(102,135)(103,137)(104,134)(106,132)(110,131)(113,133)(118,141,128,139)(121,143,125,138);(80,81,85,90,86,92,111,123,87,93,84,91,107,122,108,126)(82,94,97,115,98,120,109,116,99,130,96,127,112,124,105,88)(83,100,102,128,103,121,106,89,104,117,101,118,113,125,110,119)(95,114,132,138,133,139,135,142,134,140,131,143,137,141,136,129)

Polycyclic presentation:

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

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, 86777);