Finite Group Databasebeta

#34181897

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #8777

Subgroups

subgroupG/H
centerC22#19098424
commutatorC22×C4×C79C22×C4
FrattiniC23×C4C22×D79
FittingC79×#1465C2
socleC22×C79#381
prime radicalC22×D4×C79D4
cosocleC23×C4×C79C23
hypercenter#1465D79
hypocenterC79#8777
LCSG ▷ C22×C4×C79 ▷ C22×C79 ▷ C79
UCSC1 ◁ C22 ◁ C23×C4 ◁ #1465

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

normal subgroups only

This group has 480 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) = 103
transitive degreeμt(G) = 2528

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

Polycyclic presentation:

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

Conjugacy classes & character table

1291 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 63196);