n!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 156: | \[156!!!+1\] | 53 × 3697 × 13109 × 670729 × 227208169 × 358434581 × 77402254691<11> × 43988489336821<14> × 323840537943644531<18> × 3368634977064034649<19> |