n!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
* 273: | \[273!!!+1\] | 6106457780592163<16> × 38988209585610893381<20> × 23087847540618926235571<23> × [644028764905640132398683054101870524621720852091897480093732004070154689356059236298324277567996342561612388341286144012765877<126>] |