n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 231: | \[231!!!!-1\] | 22 × 2063 × 36418667 × 305797403 × 1693949593932386826910277609<28> × 370332460041723815764820691757460633942593563999685605423026022143<66> |