Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 273: | \[{13^{273}-1\over12}\] | 3 × 43 × 53 × 61 × 79 × 337 × 547 × 1093 × 4603 × 10193 × 21841 × 34763 × 149059 × 264031 × 1326781 × 1803647 × 2714377 × 5229043 × 49463779 × 2802993649 × 57745124662681<14> × 40813178233787040554383<23> × 72019220497491955875703699<26> × 4360058677522333400302555160685378238981<40> × 31947794485097470711114840263395541212025034761493<50> × 1027775361756790700735902690877980145588408989555067923850863859851<67> |