Finite Group Databasebeta

#34197601

order20224
automorphism?
homologyAbelianization (H1) = C22×C8 · Schur multiplier (H2) = C2×C4

Aliases

No aliases for this group.

Splittings

FittingC79×#2162 ⋊ C2
SylowC79 ⋊ #11492

Subgroups

subgroupG/H
centerC2×C4C2×(C2×D79)⋊C4
commutatorC2×C4×C79C22×C8
FrattiniC22×C8C22×D79
FittingC79×#2162C2
socleC22×C79C2×C22⋊C8
prime radical#19099113C4
cosocleC22×C8×C79C23
hypercenter#2162D79
hypocenterC79#11492
LCSG ▷ C2×C4×C79 ▷ C22×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C2×C4×C8 ◁ #2162

360 conjugacy classes of subgroups; only the 107 normal subgroups are shown.

normal subgroups only

This group has 360 conjugacy classes of subgroups — too many to draw. Only its 107 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) = 119
transitive degreeμt(G) = 10112

A minimal faithful permutation representation — 3 generators on 119 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)(88,91,92,107,94,108,95,93)(89,97,109,117,100,116,98,99)(90,102,110,104,105,106,103,118)(96,111,101,112,113,115,114,119);(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)(81,84)(82,86)(88,90)(89,96)(91,106)(92,110)(93,104)(94,105)(95,103)(97,115)(98,114)(99,112)(100,113)(101,109)(102,108)(107,118)(111,116)(117,119);(80,81,82,85,83,84,86,87)(88,89,93,99,95,98,108,116,94,100,107,117,92,109,91,97)(90,101,104,115,103,96,102,112,105,114,118,111,110,113,106,119)

Polycyclic presentation:

2^8,79|a^2=e,c^2=fg,d^2=h,e^2=g,g^2=h,b^a=bd,d^a=df,c^b=ch,d^b=dh,e^b=efh,i^b=i^78

Conjugacy classes & character table

3184 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 78900);