n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
241: | \[241!!!!-1\] | 23 × 785353 × 3803917437539522252304846084531779<34> × 1424726036204649306212212290332869041450961069913236971178494482183095264647119<79> |