n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 220: | \[220!!!!-1\] | 163 × 383 × 102911 × 7653649 × 808715158983656418377611914001<30> × 414445980740843385410811504966013192843696442431606784508629<60> |