Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 212: | \[{13^{212}-1\over12}\] | 22 × 5 × 7 × 17 × 107 × 1061 × 3499 × 194723 × 7504072417<10> × 202326783229<12> × 189541180943969<15> × 2034766409871541<16> × 8403659652641423<16> × 37379721025854083<17> × 39349502420618381<17> × 274690322498001718403<21> × 55315179851718646236650521<26> × 1331344930977110852021126518627097<34> × 442773440141111075167142197133681487289<39> |