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>
| 447: | \[L_{447}\] | 22 × 1789 × 952111 × 4434539 × 595079479 × 3263039535803245519<19> × 44572961316701091570454843936327625650477556780221<50> |