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>
609: | \[L_{609}\] | 22 × 292 × 59 × 211 × 349 × 19489 × 725929 × 331394659 × 947104099 × 2748232098283374889444289976282269<34> × 105238997086730744050651432332334909759841837482929487291<57> |