Finite Group Databasebeta

#34182638

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #8912

Subgroups

subgroupG/H
centerC23#14579131
commutatorC42×C79C22×C4
FrattiniC2×C42C22×D79
FittingC79×#1295C2
socle, prime radicalC23×C79#120
cosocleC2×C42×C79C23
hypercenter#1295D79
hypocenterC79#8912
LCSG ▷ C42×C79 ▷ C22×C79 ▷ C79
UCSC1 ◁ C23 ◁ C2×C42 ◁ #1295

412 conjugacy classes of subgroups; only the 105 normal subgroups are shown.

normal subgroups only

This group has 412 conjugacy classes of subgroups — too many to draw. Only its 105 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) = 107
transitive degreeμt(G) = 20224

A minimal faithful permutation representation — 3 generators on 107 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)(84,85)(86,91)(87,89)(88,90)(92,95,98,94)(93,100,103,99)(96,107,97,105)(101,106,102,104);(80,82,83,81)(86,90)(88,91)(92,94,98,95)(93,99,103,100)(96,107,97,105)(101,106,102,104);(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)(80,81,83,82)(85,88)(86,90)(89,91)(92,93,98,103)(94,104,95,106)(96,102,97,101)(99,107,100,105)

Polycyclic presentation:

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

Conjugacy classes & character table

1522 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 63937);