n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
158: | \[158!!-1\] | 367 × 7188989947835765223359968993<28> × 204962048201287861069092301726883124320188279255856533762791775013107308394900989838066549331198468464106032529<111> |