Finite Group Databasebeta

#34205017

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C23

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #12957

Subgroups

subgroupG/H
centerC22#19098675
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#2141C2
socleC22×C79#442
prime radicalC23×C79AGL(1,ℤ/8)
cosocleC22×C8×C79C23
hypercenter#2141D79
hypocenterC79#12957
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C22×C4 ◁ C22×C8 ◁ #2141

396 conjugacy classes of subgroups; only the 121 normal subgroups are shown.

normal subgroups only

This group has 396 conjugacy classes of subgroups — too many to draw. Only its 121 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) = 115
transitive degreeμt(G) = 5056

A minimal faithful permutation representation — 3 generators on 115 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)(84,86,91,102)(85,93,96,110)(87,99,105,113)(88,98,104,114)(89,101,90,100)(92,108,103,115)(94,97,106,112)(95,111,107,109);(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)(81,83)(85,92,96,103)(87,104)(88,105)(89,90)(93,108,110,115)(94,95,106,107)(97,111,112,109)(98,113)(99,114)(100,101);(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)(82,83)(84,85,89,95,91,96,90,107)(86,97,100,108,102,112,101,115)(87,103,88,106,105,92,104,94)(93,98,109,99,110,114,111,113)

Polycyclic presentation:

2^8,79|a^2=f,b^2=fg,c^2=h,d^2=g,e^2=gh,f^2=h,g^2=h,b^a=bd,c^a=ce,d^a=dg,e^a=egh,g^a=gh,i^a=i^78,d^b=dg,e^b=egh,f^b=fh,g^b=gh,i^b=i^78,d^c=dgh,e^c=eg,f^c=fh,g^c=gh

Conjugacy classes & character table

1288 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 86316);