Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 516: | \[{31^{516}-1\over30}\] | 26 × 3 × 72 × 13 × 19 × 37 × 173 × 331 × 1033 × 1291 × 922561 × 1190671 × 1665649 × 9246616801<10> × 146982701137<12> × 2337025631729<13> × 5408368622183010019<19> × 123710288494287399090741372553<30> × 161055793587113317548310197721<30> × 190775487976687263834219681558372322789<39> × 3049055684506560663410351046998584180840895763387409<52> × 2428604265313757770804574128250982331185007279645995324037847<61> × 649922096124328220863135765618962771983833603047554688254172753908883650422073164553<84> × 788328401535596852912593542736318779802066472731161317043276936671666401844157088039<84> × 28268213368244207021067545104813760525436762850832706185611685178643757376267942042333476824202437189<101> × [13822074391701274679577601879443558638490174114668461127764235294565456426161006768470795323562909877738039929424433748296252594395380843622127808283555474767529273745176593006473766042621839403073438353<203>] |