Base 28 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 170: | \[{28^{170}-1\over27}\] | 11 × 29 × 239 × 613 × 2347 × 8807 × 53951 × 637421 × 887401 × 45508138747<11> × 444007193911<12> × 2956126339800478546451<22> × 148020807352107352204781<24> × 327522355999708029837673614332668313711853849944379030509801<60> × 451024205517517423233774595442089125772950234281803785388700007290734071220905548590621<87> |