Finite Group Databasebeta

#34204900

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #12941

Subgroups

subgroupG/H
centerC22#19098695
commutatorC2×C8×C79C22×C4
FrattiniC22×C8C22×D79
FittingC79×#2159C2
socleC22×C79#447
prime radicalC23×C79AGL(1,ℤ/8)
cosocleC22×C8×C79C23
hypercenter#2159D79
hypocenterC79#12941
LCSG ▷ C2×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C22×C4 ◁ C22×C8 ◁ #2159

388 conjugacy classes of subgroups; only the 107 normal subgroups are shown.

normal subgroups only

This group has 388 conjugacy classes of subgroups — too many to draw. Only its 107 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) = 10112

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

Polycyclic presentation:

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

Conjugacy classes & character table

1294 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 86199);