Base 19 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 495: | \[{19^{495}-1\over18}\] | 32 × 31 × 67 × 127 × 151 × 211 × 331 × 397 × 523 × 911 × 991 × 2113 × 29989 × 104281 × 104743 × 568657 × 584911 × 2460181 × 3721411 × 4378771 × 34451077 × 62060021 × 94192561 × 384180191671<12> × 484536191701<12> × 7302593769703<13> × 118556279019269161897663<24> × 8374006851436085760993151<25> × 3047899314965432210712031612351<31> × 201115556443680647658647001771781<33> × 2762720155370058278742863792112809157901<40> × 1241623324655147674876651665408957875712676744103881<52> × [2158471204584649425277126973380960749898420004379653563435972626092092971785070774131603920733198063434632696998340487531883875315188280831491255455691971646903870085978224910122459610630956954697787413329194774790745562703228389331385633271565844162612794186513268959729029915068462337441311353301<298>] |