n! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 81: | \[81!-1\] | 83 × 199 × 190178327955607364367559372040479613565547<42> × 1845527614179029518658756230279717898687324519702551510453672455150398179801<76> |