n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 294: | \[294!!!!+1\] | 163781 × 1426717 × 97055801111460402908520838291<29> × 281286613939777592884431736112911<33> × 522810004656063895565379759453255366937<39> × 2317125809224876915028272451452292103149<40> |