Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 53: | \[{13^{53}-1\over12}\] | 107 × 194723 × 189541180943969<15> × 8403659652641423<16> × 274690322498001718403<21> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 53: | \[{13^{53}-1\over12}\] | 107 × 194723 × 189541180943969<15> × 8403659652641423<16> × 274690322498001718403<21> |