n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
311: | \[311!!!!-1\] | 22 × 733 × 96760282457399168514690165175571790450159474937330729938479466444741995750430328391727648237288245134614137423584443404192992192660589336408322092996938166807<158> |