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>
| 697: | \[L_{697}\] | 3571 × 370248451 × 372180918958699289<18> × 93831368392654851155470870101392561029189116197009614661437403420355499733192284817292594415580204078968846728599009<116> |