n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 139: | \[139!!-1\] | 2 × 61603 × 705189014293<12> × 7992336717163<13> × 1370863104688998825368095816154493687390454073564663731315144336415767414480758474895493881<91> |