n!!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 397: | \[397!!!!!+1\] | 159631 × 67047061 × 2677999482128642036467<22> × 907963622425176804051779742317810296021<39> × 10092450580759276034331065225709124797881681<44> × 731908918791854469762727068370490966876457428013946200941<57> |