n!!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 243: | \[243!!!!!-1\] | 4413313 × 12793549 × 3300441822553<13> × 788481942695499067<18> × 10385405168658718957185323059369113526624224787033001<53> |