n!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
239: | \[239!!!+1\] | 1296022873 × 11315310728759<14> × 182819027245088922314467<24> × 9777523554439166174783456193065191<34> × 69067875811677387968888305840483310092276195902495708692283758141178870978019<77> |