Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 219: | \[{13^{219}-1\over12}\] | 3 × 61 × 439 × 1024921 × 1762236499 × 145009586102490829218552548223336637<36> × 1194776740722409996051132396456283691052300333<46> × 4024872625750833197630427954604287560271662076359736406609<58> × 7401284564479888245813068141549806582038485852370412450644625618909223916299739743509<85> |