n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 198: | \[198!!+1\] | 199 × 52813 × 2393680334770877<16> × [23513276951572157584077831006688568790123532711363357956420917741501919118565118877946494114500626868784766284427488618577093154087991992991476659091630652862686799<164>] |