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>
| 439: | \[L_{439}\] | 4391 × 826061911 × 1149884364774317448679684799063561<34> × 13345777072640252551741515140876418537140353109<47> |