Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 71: | \[{8^{71}-1\over7}\] | 66457 × 228479 × 48544121 × 212885833 × 2849881972114740679<19> × 4205268574191396793<19> |
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 71: | \[{8^{71}-1\over7}\] | 66457 × 228479 × 48544121 × 212885833 × 2849881972114740679<19> × 4205268574191396793<19> |