n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 107: | \[107!!-1\] | 2 × 167 × 947 × 16301777 × 5004701701963<13> × 425864446569806597058043889<27> × 28985426767381946011050376467289867<35> |