n!!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
298: | \[298!!!!!+1\] | 93287 × 2966516431 × 3398035099084134977470738687414402603035139428513805766891633900564069752312858874059698264797428161397947641<109> |