n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 109: | \[109!!+1\] | 25 × 359 × 15497 × 195027167057169628672599754172398494864545235506826373693684669005329931007638191<81> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 109: | \[109!!+1\] | 25 × 359 × 15497 × 195027167057169628672599754172398494864545235506826373693684669005329931007638191<81> |