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>
| 855: | \[L_{855}\] | 22 × 11 × 192 × 31 × 181 × 191 × 229 × 541 × 571 × 9349 × 32491 × 41611 × 95419 × 162451 × 1617661 × 2069101 × 87382901 × 119130001 × 411677941 × 2388278341 × 7038398989<10> × 535212070162070311<18> × 1927048135160716651<19> × 12861133750632666871<20> × 64077484928509957062129031<26> |