n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 405: | \[405!!!!+1\] | 2 × 12437 × 4018386139 × 9695079319<10> × 1179349404169<13> × [185704515346062547307421964779289617995314538229699699651526401146267379161106187052957552345613641249395336722947596786615318238296136167258168102212915105731174049033232490748351372031<186>] |