Base 8 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 641: | \[{8^{641}-1\over7}\] | 3847 × 35897 × 49999 × 40171471 × 1173835097 × 11520235327<11> × 243803466703<12> × 2401258891949526685926151441<28> × 449378504492742522585426017496319<33> × 745276300734440606226386924312213175677903182797334854064486587296999<69> × 2420161564200739329410254310444778820196576654139080232429544162649795567983079<79> × [60982181747332840069060426934317948071206378808606383806489565478109955679125049637803922553418322601904494103128375860296086987766890614017425259242246916444871067854658114030633835707795568317136869067258976095460401325207055998368817862346828675743908435013495525900765420416621569569237911104777894712884720025108657<320>] |