Factor Info
| ID | 1664 |
| Size | 135 digits / 448 bits |
| Status | composite |
| Value | 644330307515166783155214818982831238461352907849013343748930578199555362121538091037330190972539460025382921868791946182805062790486161 |
Factorizations
| Primary | (ID: 267) 52471477541626010209 (proven prime) |
| (ID: 1665) 12279629575973247505047176863408385542764387618200667947116152390072860643643309712999781069718528760744625552378929 (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.