Finite Group Databasebeta

#34175702

order20224
automorphism?
homologyAbelianization (H1) = C2×C8 · Schur multiplier (H2) = C2

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7377

Subgroups

subgroupG/H
centerC4#19098351
commutatorC2×D4×C79C2×C8
Frattini#408C2×D79
FittingC79×#1315C2
socleC2×C79#1326
prime radicalC2×#41×C79C2×C4
cosocle#408×C79C22
hypercenter#1315D79
hypocenterC79#7377
LCSG ▷ C2×D4×C79 ▷ C2×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C4 ◁ C2×C4 ◁ C22×C4 ◁ #408 ◁ #1315

170 conjugacy classes of subgroups; only the 39 normal subgroups are shown.

normal subgroups only

This group has 170 conjugacy classes of subgroups — too many to draw. Only its 39 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:

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

Polycyclic presentation:

2^8,79|a^2=d,b^2=e,d^2=f,e^2=h,f^2=h,b^a=bc,c^a=ce,e^a=eg,g^a=gh,i^a=i^78,c^b=cg,d^b=deh,g^b=gh,i^b=i^78,d^c=dgh,e^c=eh,e^d=eh

Conjugacy classes & character table

1516 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 57001);