n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 212: | \[212!!!!-1\] | 107 × 1074264715135349<16> × 452704920047339185138704846767<30> × 6664897867776856707692496839457586229496535663934880679<55> |