Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 338: | \[{28^{338}-1\over27}\] | 29 × 53 × 547 × 2237 × 28393 × 114661 × 1476047 × 1598039 × 117542881 × 829098999747253<15> × 4543753614603737<16> × 287099878522536064323599<24> × 4700985788104603463580349<25> × 122829740061075340511071299072199<33> × 8427481539993803633058025841316616274482308960649<49> × 794991384348934083899936351507169918436010512505803028754645052685737014580359664448661112807830859596192339101477<114> × 7187963710735125169395518347411261077834344375782539452809524290214842480468336416209412795737558670908999337030478516790102640246699075595480926011877968257453663480215597691<175> |