n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
178: | \[178!!-1\] | 179 × 25600537327<11> × 2229773670381960939764824424147950835489262485473957461254726018603244732289487530786471052985421464489225160079712558685076978524311209445807441113803<151> |