Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 106: | \[{15^{106}-1\over14}\] | 24 × 107 × 4423381 × 6618762113<10> × 80469189271<11> × 144923043227<12> × 19273082604001<14> × 69249662260776479<17> × 2603667389751346537084259<25> × 1628505112656797934760689563<28> |