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>
| 1272: | \[L_{1272}\] | 2 × 47 × 1103 × 2543 × 81409 × 1022689 × 676934614737167<15> × 2503728945455329<16> × 11136890221406863<17> × 1342900195247151485879663<25> × 112617883853409480474529393535080661039525648398049<51> × 1084585006724297761492616461927955507301775628074771344211939022773949616940163073546160256148889901428868061733526647917760609<127> |