Finite Group Databasebeta

#34205255

order20224
automorphism?
homologyAbelianization (H1) = C22×C4 · Schur multiplier (H2) = C24

Aliases

No aliases for this group.

Splittings

FittingC79×#2141 ⋊ C2
SylowC79 ⋊ #13000

Subgroups

subgroupG/H
centerC22#19098695
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#2141C2
socleC22×C79#447
prime radicalC23×D79D8
cosocleC22×C8×C79C23
hypercenter#2141D79
hypocenterC79#13000
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C22×C4 ◁ C22×C8 ◁ #2141

512 conjugacy classes of subgroups; only the 113 normal subgroups are shown.

normal subgroups only

This group has 512 conjugacy classes of subgroups — too many to draw. Only its 113 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:

(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)(85,92)(87,88)(91,107)(95,110)(97,99)(101,104)(103,105)(109,115);(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)(80,82,83,81)(84,86)(85,91)(87,101)(88,104)(89,106)(90,98)(92,107)(93,111)(94,113)(95,115)(96,112)(97,103)(99,105)(100,102)(108,114)(109,110);(80,81,83,82)(84,85,88,94,102,110,103,112,90,92,87,93,89,95,105,114)(86,96,99,109,106,113,101,91,98,108,97,115,100,111,104,107)

Polycyclic presentation:

2^8,79|a^2=f,b^2=dfgh,d^2=gh,f^2=gh,g^2=h,b^a=bd,c^a=ce,e^a=eh,d^b=dg,e^b=eh,f^b=fg,g^b=gh,d^c=dh,f^c=fh,i^c=i^78

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, 86554);