n!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 237: | \[237!!!+1\] | 891477113343387888079802021<27> × 49443210176547536326422559169457839812829242810537562922005138978191456686224701260368999819487842573784180841578058594758830381<128> |