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>
| 519: | \[L_{519}\] | 22 × 1039 × 78889 × 6248069 × 811544731 × 16923049609<11> × 171246170261359<15> × 1053116702605998069713929<25> × 574458982151633409290788327767474451<36> |