Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 141: | \[{13^{141}-1\over12}\] | 3 × 61 × 283 × 1693 × 183959 × 1924651 × 19216136497<11> × 455036140638637<15> × 534280344481909234853671069326391741<36> × 6689332022177823873005978015409396373354270071109241328535423429328845721593<76> |