Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 50: | \[{15^{50}-1\over14}\] | 24 × 11 × 31 × 1531 × 4931 × 46751 × 9555151 × 34800625873379851<17> × 7112705843777290751<19> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 50: | \[{15^{50}-1\over14}\] | 24 × 11 × 31 × 1531 × 4931 × 46751 × 9555151 × 34800625873379851<17> × 7112705843777290751<19> |