n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
275: | \[275!!!!+1\] | 22 × 908623 × 4638923966521711802929350962135774790793400372059450306536157602428557498751650942717299683062994129176306884289768127030187205516453<133> |