n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
168: | \[168!!+1\] | 569 × 701 × 160721258200727299881115817789968304575864341135603452034685587327040639301813174314673077099797451335843883098710264466517284776061112796431911229<147> |