Base 18 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 552: | \[{18^{552}-1\over17}\] | 52 × 73 × 13 × 19 × 47 × 113 × 139 × 229 × 277 × 307 × 457 × 599 × 829 × 929 × 1381 × 3313 × 4831 × 84181 × 109297 × 415381 × 7468009 × 25753561 × 845970361 × 1234155529 × 11019855601<11> × 18313945455473<14> × 20801237997245359<17> × 5184266309231761249<19> × 222068509026238060237<21> × 824418892380831861979<21> × 15307085628846653386513<23> × 3913037558632733048069409307<28> × 47425584012916444409713229683<29> × 124292740483707572652291223230113<33> × 23119301658166980615359635821933664621<38> × 5724827604771643876354832533937769475429<40> × 242761830210210500592281871966137693300132209<45> × 3335831283765997129468848570484932171598514072932729<52> × 127864101712342097137668847169078985827769332154321627543306932449<66> × 22797757016387178575147811041537395862677100968465482031776934330611775405657404351609089840002396063241044740606666472386516083816928554589285358092907153<155> |