Finite Group Databasebeta

#34207707

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #13423

Subgroups

subgroupG/H
centerC22#19098749
commutator, cosocleC22×D4×C79C23
FrattiniC22×D4C22×D79
FittingC79×#1887C2
socleC22×C79B(4,𝔽2)
prime radicalC2×#127×C79C22
hypercenter#1887D79
hypocenterC79#13423
LCSG ▷ C22×D4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C23 ◁ C22×D4 ◁ #1887

558 conjugacy classes of subgroups; only the 73 normal subgroups are shown.

normal subgroups only

This group has 558 conjugacy classes of subgroups — too many to draw. Only its 73 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) = 99
transitive degreeμt(G) = 2528

A minimal faithful permutation representation — 3 generators on 99 points:

(1,3,4,2)(5,7)(6,10)(8,17)(9,14)(11,20)(12,19)(13,15)(16,18)(21,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,99,97,95,93,91,89,87,85,83,81,79,77,75,73,71,69,67,65,63,61,59,57,55,53,51,49,47,45,43,41,39,37,35,33,31,29,27,25,23);(1,2)(3,4)(5,6,9,12)(7,10,14,19)(8,16,15,11)(13,18,17,20)(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)(82,83)(84,85)(86,87)(88,89)(90,91)(92,93)(94,95)(96,97)(98,99);(2,3)(7,13)(8,15)(10,18)(11,16)(14,17)(19,20)

Polycyclic presentation:

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

Conjugacy classes & character table

1279 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 89006);