Factor Info
| ID | 1990 |
| Size | 135 digits / 449 bits |
| Status | composite |
| Value | 913490063269245458020896161471429162085844173471230712659972404220928896008826032243560051765557349620227132479606200754619484579084041 |
Factorizations
| Primary | (ID: 427) 168778913873539642145017404947 (proven prime) |
| (ID: 10098) 5412347089481170662065395847175011271247756615625731455216293304067280516095751041787151622821395943983603 (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.