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>
| 989: | \[L_{989}\] | 139 × 461 × 1979 × 6709 × 144481 × 4610719 × 135611681 × 2852018861 × 2228065782468945558189649304798322399865550575740925818211894801647972751152460572428134530066737233279653496652863963037580640979435351273641083339093168053316560321<166> |