n!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
209: | \[209!!!+1\] | 981049 × 10035684931<11> × 100384796053<12> × 3279500703433<13> × 3247817452546503535623074701139<31> × 509577087295082333414937495153410402510609764744695065862725989<63> |