Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 264: | \[{28^{264}-1\over27}\] | 3 × 5 × 13 × 232 × 29 × 67 × 89 × 157 × 199 × 271 × 757 × 2377 × 7321 × 27017 × 47221 × 135433 × 365773 × 475729 × 614657 × 6077039 × 8341873 × 50545507 × 51605161 × 212170597 × 7351568071<10> × 540610746853<12> × 23946685543873549601<20> × 59716358541760548549065761<26> × 425141076149786955572181811<27> × 1448228946058179249880169408969<31> × 878210088751600066179419875616704572986588209033<48> × 16998930251099237497936766884053210950259443514246395641<56> × 7706813453617784235385223823868613127931241172803304944401<58> |