n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 246: | \[246!!!!-1\] | 1487 × 103561 × 3206479240803872916842131607801499617018416095370873<52> × 96924559166241784669968963744271347211137234700663964475502609<62> |