n!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 252: | \[252!!!+1\] | 1951 × 4436863 × 456168889782523<15> × [10048712403475708294013452095211019181750055990490161024474518932424811526274442607997969478616020362792956297191049982607681842540538672414099<143>] |