n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 266: | \[266!!!!+1\] | 2269 × [24083041510238827236869768387657469587274316488747032171311946665000094986519864991000329130637488440216030100087278624944909651829<131>] |