n!/n# - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 64: | \[88!/88\#-1\] | 193 × 3598568523423963997131712601809376152393549507982753664967391652619226813663554162072538860103626943<100> |