n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 197: | \[197!!-1\] | 2 × 199 × 20287 × 1193081302195609813850881<25> × [3477454062925809521246147750850287617143880334997779038621094789297708114169421775043276432809472936133825549239884099068595217118706292623614487285334079<154>] |