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>
651: | \[L_{651}\] | 22 × 29 × 211 × 18229 × 63799 × 3010349 × 35510749 × 125024551 × 54366683250988923781<20> × 11260169813534893704769219<26> × 48282180899878210475423243434581382508315282361154991221<56> |