Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 40: | \[{9^{40}-1\over8}\] | 23 × 52 × 112 × 17 × 41 × 61 × 193 × 1181 × 14401 × 42521761 × 128653413121<12> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 40: | \[{9^{40}-1\over8}\] | 23 × 52 × 112 × 17 × 41 × 61 × 193 × 1181 × 14401 × 42521761 × 128653413121<12> |