Finite Group Databasebeta

#34175809

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #7413

Subgroups

subgroupG/H
centerC22#19098358
commutatorC2×C42×C79C2×C4
Frattini#391C2×D79
FittingC79×#2074C2
socleC22×C79#354
prime radicalC23×C79#99
cosocle#391×C79C22
hypercenter#2074D79
hypocenterC79#7413
LCSG ▷ C2×C42×C79 ▷ C22×C4×C79 ▷ C22×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C23 ◁ C22×C4 ◁ #391 ◁ #2074

178 conjugacy classes of subgroups; only the 43 normal subgroups are shown.

normal subgroups only

This group has 178 conjugacy classes of subgroups — too many to draw. Only its 43 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) = 5056

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)(82,87)(85,86)(88,90)(89,94,98,113)(91,104)(92,108)(93,103)(95,99,114,111)(96,115,116,118)(97,117,107,112)(100,106)(101,109)(102,110)(105,119);(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)(82,84)(83,86)(85,87)(88,89,91,96,93,98,106,116)(90,99,101,94,103,111,119,113)(92,107,109,114,110,97,105,95)(100,117,102,115,104,112,108,118)

Polycyclic presentation:

2^8,79|a^2=d,b^2=g,c^2=fh,d^2=h,e^2=h,b^a=bc,c^a=ce,e^a=eg,f^a=fh,g^a=gh,i^a=i^78,c^b=cf,d^b=def,e^b=eh,d^c=dgh,e^d=eh

Conjugacy classes & character table

1276 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 57108);