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>
| 605: | \[L_{605}\] | 113 × 199 × 331 × 3631 × 39161 × 264991 × 2299001 × 79471591 × 1651005071 × 8898711591001<13> × 51213564512572703561<20> × 97420733208491869044199<23> × 61899775651371587600208451<26> |