n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 206: | \[206!!+1\] | 467 × 22123 × 34695989 × 625437674412297560939693<24> × 3370366027946175803081368627<28> × [1329078706592776040404603061954168549273447721999291961304196488325076974517310843078477543758826011721822492174858953899594571259<130>] |