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>
| 915: | \[L_{915}\] | 22 × 11 × 31 × 1831 × 7321 × 86011 × 312931 × 30727531 × 5402573581<10> × 14686239709<11> × 5600748293801<13> × 11868899378561<14> × 533975715909289<15> × 22720140877528321<17> × 4378084769822207978971<22> × 2851671040957030569903401<25> × 13854904364713643609171342621705294471851<41> |