n!!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 398: | \[398!!!!!+1\] | 241709985953<12> × 53761905713043953978995517953621343311609<41> × 52932315606413010654089007354962818278377279686286907370738221892010891081450913161568388634361402963639032104755472306601<122> |