Base 9 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 42: | \[{9^{42}-1\over8}\] | 2 × 5 × 72 × 13 × 29 × 43 × 73 × 547 × 1093 × 2269 × 2857 × 16493 × 368089 × 109688713 |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 42: | \[{9^{42}-1\over8}\] | 2 × 5 × 72 × 13 × 29 × 43 × 73 × 547 × 1093 × 2269 × 2857 × 16493 × 368089 × 109688713 |