Finite Group Databasebeta

#34175908

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7446

Subgroups

subgroupG/H
centerC22#19098364
commutatorC2×C16×C79C2×C4
FrattiniC4×C16C2×D79
FittingC79×#2249C2
socleC22×C79#357
prime radicalC2×D16×C79C4
cosocleC4×C16×C79C22
hypercenter#2249D79
hypocenterC79#7446
LCSG ▷ C2×C16×C79 ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C42 ◁ C4×C8 ◁ C4×C16 ◁ #2249

136 conjugacy classes of subgroups; only the 51 normal subgroups are shown.

normal subgroups only

This group has 136 conjugacy classes of subgroups — too many to draw. Only its 51 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) = 119
transitive degreeμt(G) = 10112

A minimal faithful permutation representation — 2 generators on 119 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)(81,84)(82,86)(88,89)(90,101)(91,107)(92,109)(93,110)(94,96)(95,103)(97,106)(98,102)(99,108)(100,111)(104,114)(105,112)(113,118)(115,117)(116,119);(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)(80,81,82,85,83,84,86,87)(89,95,96,111)(90,100)(91,106)(92,102)(93,108)(97,114,98,115)(99,116,110,113)(101,107,112,109)(103,105)(104,119)(117,118)

Polycyclic presentation:

2^8,79|a^2=d,c^2=fg,d^2=efgh,e^2=gh,f^2=gh,g^2=h,b^a=bc,c^a=ce,e^a=eg,f^a=fg,g^a=gh,i^a=i^78,c^b=cf,d^b=defg,e^b=eg,f^b=fg,g^b=gh

Conjugacy classes & character table

1531 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 57207);