n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 203: | \[203!!!!+1\] | 23 × 7027 × 775568951597822788064304395865884201623339031<45> × 54985843313549125110848820826632731458076054581<47> |