Factor Info
| ID | 638 |
| Size | 90 digits / 297 bits |
| Status | composite |
| Value | 186521680962470186579008598017052605986061886309312120057705401193110057794713853679669321 |
Factorizations
| Primary | (ID: 47) 128955073914024460192651484843195641 (proven prime) |
| (ID: 9261) 1446408235838986183956283053363418526138975817379926481 (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.