Lucas Sequence
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
381: | \[L_{381}\] | 22 × 509 × 3049 × 5081 × 487681 × 7357111 × 13822681 × 19954241 × 1348763794031914156041797647143983548205749<43> |