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>
| 1983: | \[L_{1983}\] | 22 × 475921 × 6193571 × 32322741361<11> × 584048382551059<15> × 8585244855127256506523113297249<31> × 129273022933833746199372496937341<33> × 278512422805315113586249558113749643058333134959985030184340138405892912190129<78> × 382331657154918920473625551106818317498508052488401151898473656777576193806173613522460356616553264245910301801789409<117> × 100566237439139836252458279746359864143661518466480414844015649368205912808627803958731561910876375865365041945786480961<120> |