n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
* 296: | \[296!!!!-1\] | 3581 × 6180176791<10> × [5333159828665568032368487724864158862557752879477780217844565352007787259046665494754272785925619507110449649038689701860186946550337926669<139>] |