Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 186: | \[{31^{186}-1\over30}\] | 25 × 3 × 72 × 19 × 331 × 373 × 1613 × 23251 × 62869 × 145577 × 53780227 × 23171696419<11> × 35789156484227<14> × 2706690202468649<16> × 7513329295414649737<19> × 15799367012336491417<20> × 7255587057776337278077<22> × 198129096248543967569450023<27> × 583404661652480206661058499237<30> × 31832165679517520595753203434274069882869<41> × 568972471024107865287021434301977158534824481<45> |