n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
* 200: | \[200!!+1\] | 101 × 199 × 277 × 91162549 × 1717302703 × 37300227530737263121<20> × [3638934239414112182311219812045072304728239974154108267352137057736103354538387944596069703580451699449948186855620308706518593039798821904760701<145>] |