n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 283: | \[283!!!!+1\] | 24 × 119523821817555915113<21> × 79035755400559764666815617354597139<35> × 16692957259549833815029235915665548223243<41> × 527618805542304842340522451987916479536976338661<48> |