n!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
283: | \[283!!!+1\] | 19289 × 1979985691736153797<19> × 699570821221364386736891<24> × 14684588095404689392852039042068636508405069579797224977814347179691362563749605607766370582755625613135740745438401034244872779947681815899328367<146> |