n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
228: | \[228!!!!+1\] | 4404173783<10> × 11015004499<11> × 17350579049235123514960067430006233065843154690174294469329037373477912469877134648840145053<92> |