Finite Group Databasebeta

#72230218

order2688
automorphism?
homologyAbelianization (H1) = C22×C3×C4 · Schur multiplier (H2) = C25

Aliases

No aliases for this group.

Splittings

Hall#11729883 ⋊ C3
HallΓL(1,𝔽8) ⋊ #1783
SylowC7 ⋊ C3×#1783

Subgroups

subgroupG/H
centerC22C2×(C22⋊Dic7)⋊C3
commutatorC23×C7C22×C3×C4
FrattiniC22×C4C22×AGL(1,𝔽7)
FittingC23×C7×D4C2×C3
socleC22×C7C2×C3×C22⋊C4
prime radicalC23×D4×ΓL(1,𝔽8)C2
cosocleC22×C4×C7C23×C3
hypercenterC23×D4AGL(1,𝔽7)
hypocenterC7C3×#1783
LCSG ▷ C23×C7 ▷ C2×C7 ▷ C7
UCSC1 ◁ C22 ◁ C23×C4 ◁ C23×D4

1640 conjugacy classes of subgroups; only the 205 normal subgroups are shown.

normal subgroups only

This group has 1640 conjugacy classes of subgroups — too many to draw. Only its 205 normal subgroups are shown.

Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.

Full subgroup data →

Presentation

transitive degreeμt(G) = 112

Polycyclic presentation:

2^3,3,2^4,7|a^2=e,e^2=h,b^a=bf,c^a=cg,e^b=eh,f^a=fh,i^a=i^6,i^d=i^4

Conjugacy classes & character table

136 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofAGL(1,𝔽7)×#1783, #72276620, #72276646
maximal normal subgroup ofAGL(1,𝔽7)×#1783, #72276620, #72276646

GAP

Past the SmallGroups library coverage — no SmallGroups id. Construct it from its polycyclic presentation:

gap> F := FreeGroup(IsSyllableWordsFamily, "a", "b", "c", "d", "e", "f", "g", "h", "i");;
gap> coll := SingleCollector(F, [2, 2, 2, 3, 2, 2, 2, 2, 7]);;
gap> SetPower(coll, 1, F.5);;
gap> SetPower(coll, 5, F.8);;
gap> SetConjugate(coll, 2, 1, F.2*F.6);;
gap> SetConjugate(coll, 3, 1, F.3*F.7);;
gap> SetConjugate(coll, 5, 2, F.5*F.8);;
gap> SetConjugate(coll, 6, 1, F.6*F.8);;
gap> SetConjugate(coll, 9, 1, F.9^6);;
gap> SetConjugate(coll, 9, 4, F.9^4);;
gap> UpdatePolycyclicCollector(coll);;
gap> G := GroupByRws(coll);