n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 241: | \[241!!!!+1\] | 2 × 440261 × 4880513236079193631<19> × 2841785966030854188207137837381<31> × 2788176520552672883364118930580945095787013523400843540489336003<64> |