Finite Group Databasebeta

#34175774

order20224
automorphism?
homologyAbelianization (H1) = C2×C4 · Schur multiplier (H2) = C22

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7401

Subgroups

subgroupG/H
centerC2#23761398
commutatorC22×C8×C79C2×C4
Frattini#408C2×D79
FittingC79×#1321C2
socleC2×C79#1343
prime radicalC2×#41×C79D4
cosocle#408×C79C22
hypercenter#1321D79
hypocenterC79#7401
LCSG ▷ C22×C8×C79 ▷ C22×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C2×C4 ◁ C22×C4 ◁ #408 ◁ #1321

234 conjugacy classes of subgroups; only the 37 normal subgroups are shown.

normal subgroups only

This group has 234 conjugacy classes of subgroups — too many to draw. Only its 37 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)(80,82,86,97)(81,87,91,113)(83,99,103,109)(84,104,100,96)(85,95,108,94)(88,115,119,140)(89,120,116,112)(90,111,106,110)(92,117,124,118)(93,126,129,101)(98,133,135,143)(102,137,139,136)(105,130,107,132)(114,128,138,127)(121,125,122,141)(123,142,131,134);(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)(80,81,84,89,86,91,100,116)(82,92,94,123,97,124,95,131)(83,98,101,134,103,135,126,142)(85,106,107,121,108,90,105,122)(87,109,110,137,113,99,111,136)(88,114,117,102,119,138,118,139)(93,125,127,120,129,141,128,112)(96,115,130,133,104,140,132,143)

Polycyclic presentation:

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

Conjugacy classes & character table

1039 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 57073);