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>
| 683: | \[L_{683}\] | 67040549 × 103731194943011<15> × 59782906578767649941248301<26> × 131745054561203265955239484693648517487299562138533302662054062411470405936926824383693326432461<96> |