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>
| 641: | \[L_{641}\] | 12821 × 32051 × 222491752004248753427831176719811320183836159658695879683010718676484180750423887904238978824322879002845384951990422448597981<126> |