Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 371: | \[{13^{371}-1\over12}\] | 107 × 194723 × 5229043 × 189541180943969<15> × 8403659652641423<16> × 274690322498001718403<21> × [327765939090632620875573119806553795464162338731516717679158545824197228647323959632924506144278810764878598908674100532083965760487581310504292119600979625743838560440904719805006070543210177756025187749769892994423765767353346771267308782010927687901254960769823776950423959119838492190149968403544528559105998496020177152866327201283110552783601<348>] |