n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
* 161: | \[161!!+1\] | 2 × 163 × 503 × 92872763 × [57607733630697696607818582763005500236275837556351134406944794794072506801311066930978166817859864056768522781975062760327258053559<131>] |