Finite Group Databasebeta

#34197906

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C42

Aliases

No aliases for this group.

Splittings

FittingC79×#1318 ⋊ C2
SylowC79 ⋊ #11567

Subgroups

subgroupG/H
centerC22#99×D79
commutatorC22×C4×C79C22×C4
FrattiniC2×C4⋊C4C22×D79
FittingC79×#1318C2
socleC22×C79C2×#99
prime radicalC2×#14579157C4
cosocleC2×C4⋊C4×C79C23
hypercenter#1318D79
hypocenterC79#11567
LCSG ▷ C22×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C23 ◁ C2×C4⋊C4 ◁ #1318

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

normal subgroups only

This group has 462 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) = 103
transitive degreeμt(G) = 5056

A minimal faithful permutation representation — 3 generators on 103 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)(80,82,84,83)(81,86,85,87)(88,90,92,97)(89,94,96,102)(91,98,99,103)(93,100,95,101);(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)(81,85)(82,83)(89,93)(90,97)(91,99)(94,101)(95,96)(100,102);(80,81,83,87,84,85,82,86)(88,89)(90,94)(91,95,99,93)(92,96)(97,102)(98,101,103,100)

Polycyclic presentation:

2^8,79|a^2=e,c^2=gh,d^2=h,e^2=g,b^a=bd,d^a=df,f^a=fh,c^b=cgh,d^b=dh,e^b=efh,i^c=i^78,e^d=eh

Conjugacy classes & character table

1051 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 79205);