n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 211: | \[211!!!!-1\] | 2 × 27481 × 65634404224171037<17> × 46837886536576295530521296812134913513<38> × 619715959540281629486565266380121146615817<42> |