Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 169: | \[{8^{169}-1\over7}\] | 79 × 4057 × 8191 × 121369 × 6740339310641<13> × 3340762283952395329506327023033<31> × 8342680841093063014359532631803433656669591074421858694040109486076573471951766107416262860801<94> |