Base 20 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 475: | \[{20^{475}-1\over19}\] | 11 × 19 × 61 × 151 × 191 × 251 × 571 × 761 × 1451 × 1901 × 43891 × 1369801 × 1475351 × 7466201 × 46794901 × 189137401 × 2741840791 × 75368484119<11> × 192696104561<12> × 328942854011<12> × 1894266356321<13> × 64100641881631<14> × 121519670254650544050101<24> × 59457999092908767491225521<26> × 3603702295244991970004198951<28> × 288600951065166746130542702803432248327759559710358889643993518410704200840666366609620445378258390694591244400294482363636211648818995106952100882291963976719193604260339225219270398334207929086887201<201> × 6625636175089898371211947526364605388067545183455519141394537351638670377865563122683674768517887612022120943136700200462406118698149712013259092454456595380307725123164930244510181667914447963466234499154001<208> |