Lucas Sequence
Defined with \(L_0=2\), \(L_1=1\), and \(L_n=L_{n-1}+L_{n-2}\) when \(n\geq2\). Related to the Fibonacci sequence.
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 419: | \[L_{419}\] | 839 × 897499 × 316722762859<12> × 71770902070121337353161<23> × 214979797032908476941753114627650494795860641<45> |