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>
| 518: | \[L_{518}\] | 3 × 281 × 11987 × 81143477963<11> × 453402959144746802851267<24> × 4845310364593535820224589209278434904598378812351023894137285597323<67> |