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>
| 1644: | \[L_{1644}\] | 2 × 7 × 23 × 156727 × 743459543 × 8927575409<10> × 1412731614352083965299930727<28> × 8152627555222487743950968086870634209<37> × 90706910186003332974476357017612661725489<41> × 41129224949704020649408827168494091211326823<44> × 11190348272247867915933909847472310194314130023<47> × 233721272587944272800965095260295662860342558462914713110883551352936324209856304837101953845374387524233991533354494093943<123> |