n!!!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
187: | \[187!!!!-1\] | 2 × 70649858941<11> × 13271321884529<14> × 407654227235681263<18> × 2084331177374089845244797282801008716864952741<46> |