Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 40: | \[{13^{40}-1\over12}\] | 23 × 52 × 7 × 11 × 17 × 41 × 421 × 601 × 641 × 2411 × 14281 × 29881 × 30941 × 543124566401<12> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 40: | \[{13^{40}-1\over12}\] | 23 × 52 × 7 × 11 × 17 × 41 × 421 × 601 × 641 × 2411 × 14281 × 29881 × 30941 × 543124566401<12> |