n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
169: | \[169!!+1\] | 2 × 7898377 × 101184133 × 596951316623696568101<21> × 697927452422689350321372306266083747924416530104932780069677507195649181870668446639072574489482627174034500920399993<117> |