n!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
* 219: | \[219!!!+1\] | 131881957 × [2290788279604493407274224730089199869872507293325133202289913773971295451449513078133005749539858393955505028956873163390020364954093<133>] |