n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 252: | \[252!!!!-1\] | 137 × 73973 × 148617382219479488624356501727419<33> × 111983224999497359040653134943588469673073908938186279808803864611100579433124549961521<87> |