n!!!!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 299: | \[299!!!!!+1\] | 8401637 × 230615078341<12> × 6631829261914130131088054713533227343718631<43> × 212443349744582935631300802495123800661060570045665107843563151<63> |