n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
179: | \[179!!-1\] | 2 × 3541 × 7243 × 279021191152289<15> × 7631755160055536013584601728713965846881511498682352308523348416049941019255104840236842455517011831616967176961177188183996023821054756416591<142> |