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>
| 580: | \[L_{580}\] | 7 × 2161 × 299281 × 264934633647576961<18> × 834428410879506721<18> × 18966059432741598940948721<26> × 859992109740792296494185923688061297158647591735921<51> |