n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 420: | \[420!!!!-1\] | 211 × 12899 × 701155657 × 129896953472971<15> × [7178475903480314905392760467226798581497140367743146245628542599840041300495889370894691589032406932239212976463544269435862431244705916677398117690386854086903330739301851147749970767775746647844633853<202>] |