n!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 261: | \[261!!!-1\] | 283 × 1319 × 26449 × 38231 × 703123 × 67433466137126687658421<23> × [38072099690313827180242924473930655522236307269717983723943121227474737075661007179915965827367476702024955053440832106783599604531<131>] |