Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 253: | \[{13^{253}-1\over12}\] | 232 × 419 × 859 × 1381 × 18041 × 687697797999045703<18> × 2519545342349331183143<22> × 206243362068225837582427197534071063<36> × 33057495827197361601502533109785357568672954820096912119658940394953697796164523295495605454527166685604650027853933508999489731422539297007587217870558449294735476043249019297728012062365807<191> |