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>
| 1280: | \[L_{1280}\] | 34303 × 1689601 × 312145921 × 73327699969<11> × 180514379765369159681<21> × 125960894984050328038716298487435392001<39> × 13463219317035037550024340848251696963428462480237874469801359513601<68> × 7862145375903918504319566139010609561801300937695410841245207801631642774926440026006784213865106266381963944961<112> |