n!!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 305: | \[305!!!!!+1\] | 57973337 × 84347091842894789227959463423873935441469<41> × 450169985932293810781864949441471810869333312711493590945727136321218768786717<78> |