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>
| 1708: | \[L_{1708}\] | 72 × 487 × 10247 × 14503 × 15353109521<11> × 844554032368087<15> × 52471477541626010209<20> × 5500902230146438151405489047<28> × 67286651296219623671649579942263319309293720176592286977182544524219073273318513723407031179429121014525867023084925388347315290768777915986816789633701255394322420505579486735285476894795510111563319092787344139449944011029128486670121480851842707201554240000490561470929<272> |