n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
200: | \[200!!!!+1\] | 547 × 118659092417<12> × 15130260996970410166009041669487729<35> × 39259039549931679922671443416833376384888452731<47> |