Base 31 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 372: | \[{31^{372}-1\over30}\] | 26 × 3 × 72 × 13 × 19 × 37 × 331 × 373 × 1613 × 23251 × 44641 × 62869 × 145577 × 415153 × 922561 × 53780227 × 23171696419<11> × 238369488913<12> × 35789156484227<14> × 2706690202468649<16> × 7513329295414649737<19> × 15799367012336491417<20> × 7255587057776337278077<22> × 198129096248543967569450023<27> × 4227818467118098502032409617<28> × 583404661652480206661058499237<30> × 2003699564225548745892877420657<31> × 31832165679517520595753203434274069882869<41> × 568972471024107865287021434301977158534824481<45> × 6696881902877346339339237951208306682515373761<46> × 152422397505254107925733151209392305028465790568131199553233<60> × 729527663868489818869443753655962819807690366535991304169573580552940020358902345617<84> |