Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 288: | \[{13^{288}-1\over12}\] | 25 × 32 × 5 × 7 × 17 × 19 × 37 × 61 × 73 × 97 × 157 × 271 × 937 × 1009 × 2017 × 2657 × 3889 × 4177 × 14281 × 28393 × 47521 × 54721 × 88993 × 181297 × 428041 × 441281 × 680401 × 1471069 × 1590049 × 1609669 × 283763713 × 407865361 × 815702161 × 29975087953<11> × 127028743393<12> × 659481276875569<15> × 6654909974864689<16> × 9818892432332713<16> × 403791981344275297<18> × 558181416418089697<18> × 8299042833797200969471889569<28> × 1254231814340655898910816148400589019431596446546227589116353<61> |