Factor Info
| ID | 331 |
| Size | 75 digits / 249 bits |
| Status | composite |
| Value | 668401966615745846688558433603736134629032536609147256414077876794697473053 |
Factorizations
| Primary | (ID: 15) 3418816640903898929534613769 (proven prime) |
| (ID: 9143) 195506819119444628118393349617623701189123224437 (proven prime) |
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.