Finite Group Databasebeta

#34201651

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #12308

Subgroups

subgroupG/H
centerC2#23762438
commutator, cosocleC2×M16×C79C23
FrattiniC2×M16C22×D79
FittingC79×#1340C2
socleC2×C79#1616
prime radicalC23×C79AGL(1,ℤ/8)
hypercenter#1340D79
hypocenterC79#12308
LCSG ▷ C2×M16×C79 ▷ C2×C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C2×C4 ◁ C2×M16 ◁ #1340

274 conjugacy classes of subgroups; only the 53 normal subgroups are shown.

normal subgroups only

This group has 274 conjugacy classes of subgroups — too many to draw. Only its 53 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) = 111
transitive degreeμt(G) = 2528

A minimal faithful permutation representation — 3 generators on 111 points:

(2,8,11,10)(7,23,25,24)(9,16,28,26)(12,27,30,29)(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)(81,82)(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);(1,3,6,15)(2,7,11,25)(4,17,20,31)(5,21,22,14)(8,23,10,24)(9,27,28,29)(12,16,30,26)(13,19,32,18);(1,2,5,8,6,11,22,10)(3,12,14,27,15,30,21,29)(4,16,19,9,20,26,18,28)(7,17,24,13,25,31,23,32)(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)(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)

Polycyclic presentation:

2^8,79|a^2=fg,b^2=h,c^2=g,d^2=f,e^2=h,f^2=h,b^a=bd,c^a=ce,d^a=df,e^a=eh,f^a=fh,g^a=gh,i^a=i^78,d^b=dfh,e^b=egh,f^b=fh,d^c=dg,i^c=i^78,e^d=eh

Conjugacy classes & character table

805 conjugacy classes — view the full character table.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 82950);