Finite Group Databasebeta

#34206620

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

Aliases

No aliases for this group.

Splittings

FittingC79×#1813 ⋊ C2
SylowC79 ⋊ #13232

Subgroups

subgroupG/H
centerC2#23764235
commutatorC22×C4×C79C22×C4
FrattiniC2×#41C22×D79
FittingC79×#1813C2
socleC2×C79#1964
prime radical#19099127C22
cosocleC2×#41×C79C23
hypercenter#1813D79
hypocenterC79#13232
LCSG ▷ C22×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2 ◁ C2×C4 ◁ C2×#131 ◁ #1813

448 conjugacy classes of subgroups; only the 95 normal subgroups are shown.

normal subgroups only

This group has 448 conjugacy classes of subgroups — too many to draw. Only its 95 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:

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

Polycyclic presentation:

2^8,79|a^2=f,b^2=df,c^2=e,e^2=h,f^2=h,b^a=bd,c^a=ce,d^a=dg,e^a=eh,g^a=gh,d^b=dg,f^b=fg,g^b=gh,i^b=i^78,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, 87919);