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>
| 674: | \[L_{674}\] | 3 × 8089 × 3031242733721<13> × 79163471551163<14> × 513818515048347857040083413414906201<36> × 240823100103405544167696990577035215682324285390608918545568748778212148123<75> |