n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 240: | \[240!!-1\] | 239 × 1089103 × 69752395362341<14> × 8709730765298517164832407<25> × 56229291973534919507855211452675467466754172456995633765003361550117849399018860815154620073618205998516214894338174068026133189515759302164520577636538474996671074559803683354441387466981<188> |