n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 204: | \[204!!+1\] | 103 × 10861 × 19853 × 161977108687<12> × [1355182967148550505783262186611143884976468325362479683092645313493703893087281395110205162785997380034949287707065202882189910926431033120327478448760970809322818121022577<172>] |