Finite Group Databasebeta

#34204139

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

Aliases

No aliases for this group.

Splittings

FittingC79×#1884 ⋊ C2
SylowC79 ⋊ #12772

Subgroups

subgroupG/H
centerC4#19098749
commutatorC2×Q8×C79C22×C4
FrattiniC2×#41C22×D79
FittingC79×#1884C2
socleC2×C79#1790
prime radical#23777536C2
cosocleC2×#41×C79C23
hypercenter#1884D79
hypocenterC79#12772
LCSG ▷ C2×Q8×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C4 ◁ C2×C4 ◁ C2×#41 ◁ #1884

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

normal subgroups only

This group has 760 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:

(2,8)(4,17)(5,19)(7,21)(9,23)(10,11)(12,28)(13,15)(14,31)(22,27)(24,26)(25,29)(33,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,111,109,107,105,103,101,99,97,95,93,91,89,87,85,83,81,79,77,75,73,71,69,67,65,63,61,59,57,55,53,51,49,47,45,43,41,39,37,35);(1,3)(2,7)(4,15)(5,14)(6,16)(8,21)(9,25)(10,27)(11,22)(12,26)(13,17)(18,32)(19,31)(20,30)(23,29)(24,28)(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);(1,2,4,9)(3,12,15,7)(5,10,18,23)(6,11,17,26)(8,20,24,19)(13,22,16,25)(14,29,32,21)(27,31,28,30)

Polycyclic presentation:

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

Conjugacy classes & character table

1282 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 85438);