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>
| * 1646: | \[L_{1646}\] | 3 × 154723 × 3511020935782464187<19> × 157073705032841608409<21> × 4279756700904721698523<22> × 30260600686752665559099917005281939427<38> × [2972666485440844035324241314141768212213836395334808022696754668386764511086927288119759979598890368955335480463275623261368212306250784519331201214628677124078387327887870232380272367723918834226216525559097503409169496965906889369535302529<241>] |