Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 53: | \[{15^{53}-1\over14}\] | 4423381 × 19273082604001<14> × 69249662260776479<17> × 2603667389751346537084259<25> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 53: | \[{15^{53}-1\over14}\] | 4423381 × 19273082604001<14> × 69249662260776479<17> × 2603667389751346537084259<25> |