n!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 381: | \[381!!!!+1\] | 2 × 28921 × 60493 × 669426592198831007<18> × [23876433276693349799611749941654972182055252667784992644671730574067558934763693532635196360523600799123463699512658379264146482136180718992357432256043541787106271575888767453203<179>] |