n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 506: | \[506!!!!+1\] | 13099507 × 2298823464943767317<19> × 33115204702672615882451<23> × [4373979616830081521641318597681121850506890265619640188337265536894610464089744802152492258329397092373190483144727009059910198052019066406419830540457499741474233157574341895227938839779082240650529200673703261461326337912775632765921279829<241>] |