Finite Group Databasebeta

#34204591

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C23

Aliases

No aliases for this group.

Splittings

FittingC79×#1389 ⋊ C2
SylowC79 ⋊ #12874

Subgroups

subgroupG/H
centerC2#23763485
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#1389C2
socleC2×C79#1823
prime radicalC2×#11929624D4
cosocleC22×C8×C79C23
hypercenter#1389D79
hypocenterC79#12874
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C22×C4 ◁ C22×C8 ◁ #1389

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

normal subgroups only

This group has 376 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:

(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)(81,88,89,96)(83,97)(84,85)(87,102,92,107)(90,91,106,101)(93,109)(94,100)(98,99)(103,105,108,104)(110,111);(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)(81,87)(83,93)(84,100)(85,94)(86,95)(88,102)(89,92)(90,103)(91,105)(96,107)(97,109)(98,111)(99,110)(101,104)(106,108);(80,81,84,91,86,89,85,101)(82,92,94,105,95,87,100,104)(83,96,98,106,99,88,97,90)(93,102,109,108,110,107,111,103)

Polycyclic presentation:

2^8,79|a^2=f,c^2=d,e^2=g,f^2=h,g^2=h,b^a=bd,c^a=ce,d^a=dh,e^a=eg,g^a=gh,f^b=fh,i^b=i^78,e^c=eg,f^c=fh,g^c=gh,i^c=i^78

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, 85890);