Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 169: | \[{28^{169}-1\over27}\] | 53 × 1476047 × 4543753614603737<16> × 4700985788104603463580349<25> × 122829740061075340511071299072199<33> × 8427481539993803633058025841316616274482308960649<49> × 794991384348934083899936351507169918436010512505803028754645052685737014580359664448661112807830859596192339101477<114> |