n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
185: | \[185!!+1\] | 2 × 2029 × 7900142543659<13> × 596939758183183<15> × 2919846107073875812173521<25> × 2103679981783814100531295221610236633633919<43> × 5694037278187713708170108352030939040104024211618381288008773268581196199<73> |