Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 140: | \[{13^{140}-1\over12}\] | 22 × 52 × 72 × 11 × 17 × 29 × 71 × 211 × 421 × 601 × 641 × 2411 × 22079 × 30941 × 654221 × 759641 × 5229043 × 3357897971 × 16566575194331<14> × 23161037562937<14> × 707179356161321<15> × 296376064934132422053161022580730249078367228427198561<54> |