Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 250: | \[{28^{250}-1\over27}\] | 11 × 29 × 151 × 251 × 15101 × 53951 × 106801 × 245251 × 637421 × 2606251 × 32861501 × 6813064001<10> × 7984305701<10> × 1606876519751<13> × 10477992868501<14> × 155389757939666251<18> × 222929435014083414901<21> × 3192292264490416526039188001988268492317727208247565940529255337832881582287841880647286039488134957106578095721751<115> × 1599000960085924476472613473719992411738225991261539629819839771552618469753882940656168305718116566993734075537931251<118> |