Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 430: | \[{15^{430}-1\over14}\] | 24 × 11 × 31 × 173 × 431 × 1531 × 4931 × 168991 × 39205337 × 5519984993<10> × 16112471507273<14> × 48952628552881<14> × 38664536016220999<17> × 62576791657323991<17> × 1833802200566194141<19> × 4814957964951736081<19> × 1300383993755541396391<22> × 4975400197345478916839425015315256265857101<43> × 26656068987980386414408582952871386493955339704241<50> × 2596855758588151053898863550500681735472021353969461351<55> × 7272282873616636486248750610008322442226145351765444154226961<61> × 607064969132947099691521321445518129626794195717731676349002587568390796609210794977723009395194321687677185104691510451361477815925751198991<141> |