n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 110: | \[110!!-1\] | 149 × 331 × 92143 × 21248614506425878333<20> × 2434762742093273197369<22> × 1945658418772569443474579014410036699211<40> |