Finite Group DatabasebetaFinite Group Databasebeta| order | 18945 |
| automorphism | ? |
| homology | Abelianization (H1) = C5×C9 · Schur multiplier (H2) = C1 |
| direct product | C5×C421⋊C9 |
| unambiguous semidirect product | (C5×C421)⋊C9 |
| derived, Sylow | C421 ⋊ C5×C9 |
| Hall | C5×C421 ⋊ C9 |
| subgroup | G/H | |
|---|---|---|
| center, hypercenter | C3×C5 | C421⋊C3 |
| commutator, hypocenter | C421 | C5×C9 |
| Frattini | C3 | C5×C421⋊C3 |
| Fitting, socle, prime radical | C3×C5×C421 | C3 |
| cosocle | C3×C421 | C3×C5 |
| LCS | G ▷ C421 | |
| UCS | C1 ◁ C3×C5 | |
12 conjugacy classes of subgroups.
| transitive degree | μt(G) = 18945 |
2145 conjugacy classes. The character table is too large to display.
| maximal subgroup of | C2×C5×C421⋊C9, C5×D421⋊C9, D5×C421⋊C9, … |
| maximal normal subgroup of | C2×C5×C421⋊C9, C5×D421⋊C9, D5×C421⋊C9, … |
| maximal quotient of | C2×C5×C421⋊C9 |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(18945, 4);