n!!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 423: | \[423!!!!!+1\] | 2607751058228059<16> × [3167057300731323754746044941361033838616604355704343910461977404437415084413715443180111243794241318584245799916801050964445167930715849539287095771984910030582059343508691<172>] |