n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 235: | \[235!!+1\] | 22 × 3469 × 25667 × 1972291 × 2354227 × 1199242927844287<16> × 145980754399770100309<21> × 192605150322266588172727<24> × [144843741627727849849381557349590106404399022213165752267739330436892121092319890244247939118171784092813884896556568353458548557020840196786830814069<150>] |