n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 295: | \[295!!!!+1\] | 2 × 8260542732823027<16> × 312249185715040499<18> × 447010097737144760446791318063569<33> × 14223002487701240689467188488573480764980687449775256285364243750852478174493823853099<86> |