Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 39: | \[{28^{39}-1\over27}\] | 3 × 53 × 271 × 1483 × 1951 × 219386077 × 4543753614603737<16> × 81923931656777716741<20> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 39: | \[{28^{39}-1\over27}\] | 3 × 53 × 271 × 1483 × 1951 × 219386077 × 4543753614603737<16> × 81923931656777716741<20> |