n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 510: | \[510!!!!+1\] | 347 × 13381 × 32845415731<11> × 336483297727649<15> × 43348954482124821645963919364067985996622433743548915254352863314689402689977936777793088399716322829609716075915648245287688049651431446161783090589903222267215622617060732009056029822224318702743417861537066119319968756724485779537693173073367418984432648397<260> |