Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 340: | \[{15^{340}-1\over14}\] | 25 × 11 × 31 × 113 × 137 × 443 × 1531 × 2551 × 4931 × 19421 × 29173 × 131381 × 712573 × 3576121 × 486068761 × 1045002649 × 3395062589 × 6734509609<10> × 13695697627231<14> × 101462866544971<15> × 608605859277144821<18> × 47873588568577331761<20> × 37686497208110926335063461<26> × 6932935330848950747869263632955018901541<40> × 160065692871452315298274654648912144058547558965161<51> × 56829536443149107315991803743105617127860919020829030897561<59> × 1737312434693929309175606904667659697444924171560401053012526469801639759361<76> |