n! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 79: | \[79!-1\] | 21289796287569735866708594882309656982337071<44> × 42020985123311371133645521091658346474614704546934625932033564954554085169<74> |