Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 420: | \[{13^{420}-1\over12}\] | 22 × 3 × 52 × 72 × 11 × 17 × 29 × 31 × 43 × 61 × 71 × 157 × 211 × 337 × 421 × 463 × 547 × 601 × 641 × 673 × 2411 × 2857 × 4621 × 4651 × 22079 × 28393 × 30941 × 161971 × 654221 × 759641 × 1759171 × 2714377 × 5229043 × 28325071 × 460655521 × 1453046401 × 3357897971 × 54165939703<11> × 995277238201<12> × 16566575194331<14> × 23161037562937<14> × 707179356161321<15> × 30152259698778631<17> × 61452748127532301<17> × 5160206875469814362621849035741<31> × 320553148774196624469658887398942218735081<42> × 296376064934132422053161022580730249078367228427198561<54> × 86297794105228401539836540411996799887021378798575680599824416552282269216206509701965747383164351003081921<107> |