n!! + 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 97: | \[97!!+1\] | 2 × 311 × 409 × 5531 × 3660824059 × 687836876833<12> × 11748767868799981<17> × 661332426119068497292832325011<30> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 97: | \[97!!+1\] | 2 × 311 × 409 × 5531 × 3660824059 × 687836876833<12> × 11748767868799981<17> × 661332426119068497292832325011<30> |