Finite Group Databasebeta

#34207382

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

Aliases

No aliases for this group.

Splittings

SylowC79 ⋊ #13372

Subgroups

subgroupG/H
centerC22#19098853
commutator, cosocleC22×C8×C79C23
FrattiniC22×C8C22×D79
FittingC79×#1974C2
socleC22×C79#476
prime radicalC2×#135×C79C22
hypercenter#1974D79
hypocenterC79#13372
LCSG ▷ C22×C8×C79 ▷ C4×C79 ▷ C2×C79 ▷ C79
UCSC1 ◁ C22 ◁ C22×C4 ◁ C2×C4×C8 ◁ #1974

370 conjugacy classes of subgroups; only the 99 normal subgroups are shown.

normal subgroups only

This group has 370 conjugacy classes of subgroups — too many to draw. Only its 99 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)(81,83)(84,86)(85,92)(87,100)(88,103)(89,99)(90,97)(91,106)(93,111)(94,109)(95,110)(96,112)(98,104)(101,115)(102,114)(105,108)(107,113);(80,81)(82,83)(85,91)(86,97,100,99)(92,109,106,110)(93,107)(94,95)(96,113,114,111)(98,103,108,115)(102,112);(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)(84,85,87,91)(86,96)(88,102,101,112)(89,95,90,94)(92,108)(93,104,107,105)(97,113)(98,106)(99,111)(100,114)(103,110)(109,115)

Polycyclic presentation:

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

Conjugacy classes & character table

1756 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(20224, 88681);