n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 278: | \[278!!!!-1\] | 6203 × 3720643725833140120957083769563442045492859053<46> × 48695080280693231921949404356673539763734450198253549896810782652800390425391132882060219361<92> |