Finite Group DatabasebetaFinite Group Databasebeta| order | 798 |
| isoclinism | isoclinic class of D57 |
| automorphism | ? |
| homology | Abelianization (H1) = C2×C7 · Schur multiplier (H2) = C1 |
| direct product | C7×D57 |
| unambiguous semidirect product | C3⋊(C7×D19) |
| unambiguous semidirect product | C19⋊(D3×C7) |
| Fitting, socle, Hall | C3×C7×C19 ⋊ C2 |
| derived, Hall | C3×C19 ⋊ C2×C7 |
| Hall | C7×C19 ⋊ D3 |
| Hall | C3×C7 ⋊ D19 |
| Sylow | C19 ⋊ D3×C7 |
| Sylow | C3 ⋊ C7×D19 |
| subgroup | G/H | |
|---|---|---|
| center, hypercenter | C7 | D57 |
| commutator, cosocle, hypocenter | C3×C19 | C2×C7 |
| Frattini | C1 | G |
| Fitting, socle | C3×C7×C19 | C2 |
| LCS | G ▷ C3×C19 | |
| UCS | C1 ◁ C7 | |
16 conjugacy classes of subgroups.
| transitive degree | μt(G) = 399 |
210 conjugacy classes — view the full character table.
| maximal subgroup of | D3×C7×D19, D7×D57, D21⋊D19, … |
| maximal normal subgroup of | D3×C7×D19, D7×D57, D21⋊D19, … |
| maximal quotient of | C7×Dic57, C2×C7×D57, C7×D171, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(798, 21);