n!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
281: | \[281!!!-1\] | 3 × 38577413041<11> × 2043263682157127<16> × 52737090110522592217117451785759747811705664873590516843744050372506738578986650335145233950094131663835361163033102715501498006029693129895401159893251589748303219<164> |