Base 7 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 68: | \[{7^{68}-1\over6}\] | 24 × 52 × 137 × 14009 × 59361349 × 2767631689 × 29078814248401<14> × 133088039373662309<18> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 68: | \[{7^{68}-1\over6}\] | 24 × 52 × 137 × 14009 × 59361349 × 2767631689 × 29078814248401<14> × 133088039373662309<18> |