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>
| 720: | \[L_{720}\] | 2 × 769 × 2207 × 3167 × 858241 × 281490241 × 23725145626561<14> × 362660972372910721<18> × 1999653272832963841<19> × 115561578124838522881<21> × 33364102626696976997761<23> × 17173718030064788332433726155286401<35> |