n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
145: | \[145!!-1\] | 25 × 21290593 × 6133248844637704928936132370947<31> × 283793219346263874448135552822247<33> × 2346918845573876051163472872014458100740649904584637661<55> |