n!!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 293: | \[293!!!!!-1\] | 883 × 19469 × 72990347 × 1729894790293<13> × 19774418798633589572353<23> × 73516747672739530269791884607132086820892355733388066207175460222829311<71> |