Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 496: | \[{18^{496}-1\over17}\] | 52 × 13 × 19 × 97 × 113 × 311 × 373 × 929 × 1427 × 1489 × 6449 × 12959 × 70619 × 1158037 × 52710913 × 89891941 × 113607841 × 44514496129<11> × 1276827537047<13> × 9365578696924149281<19> × 844025609171791028413<21> × 1520137103457577640042913473<28> × 427906142457974033788659934939<30> × 63023759457096932797215924793101340357<38> × 447001932443218306813660347673349027827467893483654520855584317249101798995308208260074275516345536799936043292782207148888326889108447261389041<144> × [5165548753637243767816631734939565133922377030957697021885157516851332749758054423609562339624066505611484186855637789111615602314855890407824467862391809108752406775065140375380178088202391086086004145414215121041136437127480710260494563018019190019666881<256>] |