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>
| 868: | \[L_{868}\] | 72 × 743 × 14503 × 189223 × 241303 × 467729 × 33758740830460183<17> × 65743552203267541309691397911952057793224619880129<50> × 1006603991585090786191164712577648432449000187202123929604812069546893993786327829518976801<91> |