Fibonacci Sequence
Defined with \(F_0=0\), \(F_1=1\), and \(F_n=F_{n-1}+F_{n-2}\) when \(n\geq2\).
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 217: | \[F_{217}\] | 13 × 433 × 557 × 2417 × 44269 × 217221773 × 2191174861 × 6274653314021<13> |