Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 517: | \[{13^{517}-1\over12}\] | 23 × 419 × 859 × 18041 × 183959 × 19216136497<11> × 412375710913<12> × 7003341564647429<16> × 534280344481909234853671069326391741<36> × [82905161472058976004643286639555723573421476686772676218875286841647361709304056433086429078992902629750023340269389695063013392744567565475521734430692972069262899998093848862180080864544896832732179501370484004785319822697733933827793856325972356528998702776232619038042262707097277450136530363581582969512468861325116658540485699987760550050228864232009475014159680665074816463252185264456285229984668703642021059604166837619381519174800053536985660504579546077899907737313169478117<485>] |