n!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 204: | \[204!!!+1\] | 251 × 409 × 354756782327978484828576269<27> × 18939804386291454076875894823467141207345838694696877505467608224132944817009950325530051687060631<98> |