Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 49: | \[{31^{49}-1\over30}\] | 6959 × 917087137 × 62322419393153627851729037464684263699383389269055382039663<59> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 49: | \[{31^{49}-1\over30}\] | 6959 × 917087137 × 62322419393153627851729037464684263699383389269055382039663<59> |