Factor Info
| ID | 1661 |
| Size | 143 digits / 472 bits |
| Status | composite |
| Value | 11564340390330627056096518369781244839691943542968875749394360314456414587807692864249787317317633614682421246438336125388009616182687910967641 |
Factorizations
| Primary | (ID: 78) 37125857850184727260788881 (proven prime) |
| (ID: 1662) 311490186624013223364718751324723239719777232174402648568321808848241082231469225334647022798838788667678221685413961 (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.