n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 228: | \[228!!!!-1\] | 2861 × 15101 × 121525458941<12> × 20273135381109342349<20> × 3586935285318383480911687499206871<34> × 2204589844103548570697612211038638643081<40> |