n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 186: | \[186!!-1\] | 149 × 1190491 × 13824013119975973898130701803<29> × 12957125661662912661645074156466943938548850863758285208728481946227<68> × 360563999172123431974791610591019481737053626767187819888095643095081<69> |