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>
717: | \[L_{717}\] | 22 × 479 × 7649 × 4211659 × 8085397668272371<16> × 24216191671442408226762026802756956706931169<44> × 57793295859381562636006120236982013562233911809400397623016399922492680659009<77> |