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>
| 670: | \[L_{670}\] | 3 × 41 × 6163 × 1093441 × 6450761 × 201912469249<12> × 2705622682163<13> × 322476440148190504441<21> × 7514233370552684923093258920202321<34> × 14852595089809282769473582913463083247688961<44> |