n!!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 337: | \[337!!!!!+1\] | 2141 × 1509941 × 493139528858122503957396448119725847511<39> × 18862829532873470767484359791184098005506118801851800375047312087665841884939817351846727793447<95> |