n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
* 278: | \[278!!!!-1\] | 6203 × [181177044925302337075442405008026136954567309929693592854314161438834404638065500235073269018903402505120718610015946325759793648234725133<138>] |