n!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 285: | \[285!!!-1\] | 312539687 × 4220584739070617<16> × 164452758749141337443603<24> × 251797597622907935453407713326430559<36> × 5591675904956088358330801553173835232838031<43> × 71730867170860507647394215205937108743242772394882392373863427116763<68> |