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>
| 273: | \[L_{273}\] | 22 × 29 × 79 × 211 × 521 × 859 × 1836084445651<13> × 689667151970161<15> × 1032512153239041931<19> |