n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 207: | \[207!!!!+1\] | 2 × 101 × 15227 × 31859 × 337180876387<12> × 12224958190740244331<20> × 1228551640133934851165527137318194094525219729941853397553<58> |