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>
| 427: | \[L_{427}\] | 29 × 1709 × 81131 × 2649109 × 5600748293801<13> × 2897674598810659877622649944517810678643789178974565606762691<61> |