n!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
238: | \[238!!!+1\] | 593 × 5351 × 25163 × 84560699 × 56231753651858647<17> × 2214726073577264773<19> × 2670483969390407857<19> × 94585125150346173310699109740701758268025352888957985941770151888350896831170792933<83> |