Finite Group Databasebeta

#34204055

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C25

Aliases

No aliases for this group.

Splittings

FittingC79×#2135 ⋊ C2
SylowC79 ⋊ #12757

Subgroups

subgroupG/H
centerC2#23763346
commutatorC2×D4×C79C22×C4
FrattiniC2×#41C22×D79
FittingC79×#2135C2
socleC2×C79#1790
prime radical#19099070C22
cosocleC2×#41×C79C23
hypercenter#2135D79
hypocenterC79#12757
LCSG ▷ C2×D4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C2×C4 ◁ C2×#41 ◁ #2135

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

normal subgroups only

This group has 736 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) = 111
transitive degreeμt(G) = 2528

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

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

Polycyclic presentation:

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

Conjugacy classes & character table

931 conjugacy classes — view the full character table.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 85354);