n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
* 247: | \[247!!!!-1\] | 22 × [48586802573717195216108121575240385078339548259551022919421941323435828075299511691725601065330986775358033402253723144531<122>] |