Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 206: | \[{8^{206}-1\over7}\] | 32 × 619 × 2473 × 15451 × 89620507 × 2550183799 × 415141630193<12> × 2400744384937<13> × 98277023988499<14> × 68545852036177507<17> × 8142767081771726171<19> × 1953272766780718501831<22> × 3976656429941438590393<22> × 7521737478732572053581227840017636545169<40> |