n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
196: | \[196!!+1\] | 4861 × 471812449 × 2213390873516423831<19> × 588511431868701030067555314566415073178899784934362393895046805413478568747408016307545395950918667985593092419442811168325905438319917110209874777321939<153> |