n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
173: | \[173!!!!+1\] | 2 × 515873 × 12846017482159476233518662328551374369222058650605856802907864410231132781<74> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
173: | \[173!!!!+1\] | 2 × 515873 × 12846017482159476233518662328551374369222058650605856802907864410231132781<74> |