n!!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 305: | \[305!!!!!-1\] | 67 × 333174362569<12> × 172456090175225334760971287<27> × 571807746868073087491434125575902073972297717416251914747301566449460717621334368982299<87> |