Finite Group Databasebeta

#34182385

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #8876

Subgroups

subgroupG/H
centerC2×C4#14579129
commutatorC22×C4×C79C22×C4
FrattiniC2×C42C22×D79
FittingC79×#1483C2
socleC22×C79#385
prime radical#121×C79C2×C4
cosocleC2×C42×C79C23
hypercenter#1483D79
hypocenterC79#8876
LCSG ▷ C22×C4×C79 ▷ C22×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C2×C42 ◁ #1483

380 conjugacy classes of subgroups; only the 99 normal subgroups are shown.

normal subgroups only

This group has 380 conjugacy classes of subgroups — too many to draw. Only its 99 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:

(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)(82,85)(83,87)(84,86)(88,91)(89,94)(90,99)(92,96)(93,97)(95,102)(98,100)(101,103);(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)(80,81)(82,87)(83,85)(84,86)(88,90,93,100,94,102,92,101)(89,95,96,103,91,99,97,98);(81,85)(82,83)(86,87)(88,89,93,96,94,91,92,97)(90,98,100,95,102,103,101,99)

Polycyclic presentation:

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

Conjugacy classes & character table

1528 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 63684);