Factor Info
| ID | 143297 |
| Size | 137 digits / 453 bits |
| Status | composite |
| Value | 15487017821961979485847849547135180236434613573139705873133550981267647173517556808876936121213551407539979630774854574921106389702368571 |
Factorizations
| Primary | (ID: 143128) 917842427566819615573 (proven prime) |
| (ID: 143298) 16873286042156198972462193854921093010567528165312020743964302915774887724560494686561618068015051482307253576539727 (composite) |
Primary factorization keeps track of the smallest (known) prime factor. Secondary factorizations are old results kept when a new smaller prime factor is found, which occasionally happens with ECM.