n!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 291: | \[291!!!-1\] | 6277 × 19471 × 394739 × 356276286921264787216367<24> × 592660639845216822202406738167<30> × 1446395489495552752174885295041778126730247<43> × 124615943037022995790537848445703620662789435611105065290032262612050233224389377718327681<90> |