n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 291: | \[291!!!!-1\] | 2 × 113 × 111577 × 167025002357167<15> × 535585567751188016363805904964608005869<39> × 49287072647690983637756823948844702965173293278320834676789764396697049740568846980233419<89> |