n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 135: | \[135!!+1\] | 2 × 163 × 153338880794806996162151484199494002466371737611083595964495462132666413269003130807198153018257478855823446636551<114> |