Finite Group Databasebeta

#34175103

order20224
automorphism?
homologyAbelianization (H1) = C82 · Schur multiplier (H2) = C2×C4

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7139

Subgroups

subgroupG/H
centerC42C22⋊Dic79
commutatorC22×C79C82
FrattiniC2×C4×C8C2×D79
FittingC2×#322×C79C2
socleC22×C79#336
prime radicalC23×C79C4×C8
cosocleC2×C4×C8×C79C22
hypercenterC2×#322D79
hypocenterC79#7139
LCSG ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C42 ◁ C2×C4×C8 ◁ C2×#322

262 conjugacy classes of subgroups; only the 151 normal subgroups are shown.

normal subgroups only

This group has 262 conjugacy classes of subgroups — too many to draw. Only its 151 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)(80,81,82,84,83,85,86,87)(89,93)(90,96)(95,100)(97,102);(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)(88,89,90,94,91,95,97,101,92,93,96,99,98,100,102,103)

Polycyclic presentation:

2^8,79|a^2=d,b^2=e,d^2=f,e^2=g,f^2=h,b^a=bc,c^a=ch,i^a=i^78,d^b=dh

Conjugacy classes & character table

3208 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 56402);