Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 525: | \[{28^{525}-1\over27}\] | 3 × 31 × 113 × 271 × 421 × 2521 × 10501 × 15101 × 15991 × 36901 × 106801 × 206501 × 237301 × 637421 × 734941 × 4422461 × 6313861 × 236586001 × 2682962101 × 5277241901<10> × 6813064001<10> × 7984305701<10> × 30087331411201<14> × 6111587743728601<16> × 223934956756993189<18> × 888426993553429010291101<24> × 10420018720731016427597701<26> × 171813927594772108174052851<27> × 1214016885302580230773187551<28> × [756151576913943764464739259486155843542884933716339630030194239445609830255327040795077395930332765810132434094042823346791412595687769718142045538986357085493124542000040128365141991665560033740706592411976070064937752211241281741675901029119285496595852665007880085557387314415457248630420437217264027145924266000553898798200298402510871396809697869504638318918167837060853068252233523835386481823262483129349649960921267194495683415608958744229502741330319050965538162147080831007689873741<492>] |