Finite Group Databasebeta

#34175657

order20224
automorphism?
homologyAbelianization (H1) = C2×C8 · Schur multiplier (H2) = C4

Aliases

No aliases for this group.

Splittings

FittingC79×#1327 ⋊ C2
SylowC79 ⋊ #7357

Subgroups

subgroupG/H
centerC4#19098355
commutatorC42×C79C2×C8
Frattini#423C2×D79
FittingC79×#1327C2
socleC2×C79#1318
prime radical#19099113C4
cosocle#423×C79C22
hypercenter#1327D79
hypocenterC79#7357
LCSG ▷ C42×C79 ▷ C2×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C4 ◁ C2×C4 ◁ C22×C4 ◁ #423 ◁ #1327

222 conjugacy classes of subgroups; only the 39 normal subgroups are shown.

normal subgroups only

This group has 222 conjugacy classes of subgroups — too many to draw. Only its 39 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) = 95
transitive degreeμt(G) = 1264

A minimal faithful permutation representation — 2 generators on 95 points:

(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)(83,84)(85,93)(86,94)(88,95)(89,91)(90,92);(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)(80,81,83,89,85,88,82,92,86,91,93,87,84,90,94,95)

Polycyclic presentation:

2^8,79|a^2=d,c^2=gh,d^2=f,e^2=h,f^2=h,b^a=bc,c^a=ce,e^a=eg,g^a=gh,c^b=cgh,d^b=deg,e^b=eh,i^b=i^78,d^c=dgh,e^d=eh

Conjugacy classes & character table

1048 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 56956);