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>
| 861: | \[L_{861}\] | 22 × 29 × 211 × 256579 × 4767481 × 319973431 × 370248451 × 7188487771<10> × 101731310703289<15> × 10635841025639256246541<23> × 31451151288950996875041972265727593646326460175339576543059225442140443426798860427239965000416477801<101> |