n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
* 263: | \[263!!!!-1\] | 22 × [211830130714643797409213440894388259110952226837977548990085931458108253655836343510126983500936488629462927636530585588203430175781<132>] |