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>
| 815: | \[L_{815}\] | 11 × 21191 × 73351 × 1043201 × 1938071 × 6601501 × 29829001 × 5993716686497820151<19> × 1686454671192230445929<22> × 29036057158125223013126088041<29> × 113112849794040830005551946031<30> × 935054830152584514962446826518669351<36> |