Finite Group Databasebeta

#34175273

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7206

Subgroups

subgroupG/H
centerC2×C4#14579076
commutatorC2×C4×C79C4×C8
FrattiniC2×C4×Q8C2×D79
FittingC79×#1984C2
socleC22×C79#342
prime radicalC23×C79#95
cosocleC2×C4×Q8×C79C22
hypercenter#1984D79
hypocenterC79#7206
LCSG ▷ C2×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C2×C4 ◁ C22×C4 ◁ C2×C4×Q8 ◁ #1984

284 conjugacy classes of subgroups; only the 91 normal subgroups are shown.

normal subgroups only

This group has 284 conjugacy classes of subgroups — too many to draw. Only its 91 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) = 10112

A minimal faithful permutation representation — 2 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)(80,82,84,87,85,86,83,81)(89,93,96,94)(95,102,103,101);(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)(80,81,83,86,85,87,84,82)(88,89,91,95,92,96,100,103)(90,94,97,102,98,93,99,101)

Polycyclic presentation:

2^8,79|a^2=d,b^2=e,c^2=h,d^2=g,e^2=gh,b^a=bc,c^a=cf,e^a=eh,f^a=fh,i^a=i^78,d^b=dfh,d^c=dh

Conjugacy classes & character table

2236 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 56572);