Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 249: | \[{13^{249}-1\over12}\] | 3 × 61 × 997 × 12451 × 1383113 × 51129204352671125610663421<26> × 27635262629301170027944357627<29> × 1386931777883518057046869588983880892136291513972206972463883515737484028199438341<82> × 318652701091476520203478301399596419727237551474846929168871017280148042563212146088974245772334087357410343091231744511138171<126> |