Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 455: | \[{15^{455}-1\over14}\] | 7 × 11 × 53 × 71 × 131 × 911 × 4931 × 157483 × 1743463 × 4167731 × 16655159 × 24002161 × 124074497 × 970449481 × 15890593811<11> × 936800875930739<15> × 107145886289606711<18> × 53096945644422356461<20> × 17170361660966470075534871<26> × 1751898328544152699647421291268992709749362876250277<52> × 2019047273585208433900886541315654544678694069335036331<55> × [19560378482165189896892530000836547863557012316348309537686058195814319547629293010232187093755182920473708782152034653652128646145520153874143727811742307725533983495215086436147070447127567720679564306640927564261645284406408670294080420285163227655801318953924459604239558771<278>] |