n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 170: | \[170!!+1\] | 6043 × 69235510417<11> × [26047799293915781017171299402994527659799505804973932637550887826429134690277475015173103017481127458059826037117216848667576171319856607971<140>] |