n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 216: | \[216!!+1\] | 109 × 6274283 × 56578387 × 256201177 × 43362639446357883062056818872417233569956978431484919383085688846782336561284674143263159133343674303370598696981193567414914665838642047620098536219431294608903732834225977075704317<182> |