Lucas Sequence
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 638: | \[L_{638}\] | 3 × 43 × 307 × 347 × 1270083883 × 61861940956201<14> × 19989455841535200486182533980671340646159599962343519917463836931033414123698249926192254599593331071801<104> |