Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 171: | \[{7^{171}-1\over6}\] | 32 × 192 × 37 × 419 × 1063 × 19609 × 18684829 × 879399649 × 4534166740403<13> × 9674698906207<13> × 6957533874046531<16> × 175336938770236118176950803989<30> × 586570628867364296441543447106691327380847<42> |