Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 355: | \[{28^{355}-1\over27}\] | 637421 × 25828494169<11> × 14727620554111<14> × 37313251966817<14> × 857600610882384989993501<24> × 12545828349205597148204057379731<32> × 250962707786649416977683047545011125829975942346091801<54> × [8352617739696417874595072233109622689622107797493733998834540601833702215382797251382107314471659168164555633072811185063895527433329447370785622878618076731600353677193468307165158627666120961258777121442325873292105376011098545981201492006189914810851620580762967879410581808819387114638288245818332500409874534504542775490842109476486174431731041905419043801<361>] |