Factor Info
| ID | 1540 |
| Size | 81 digits / 268 bits |
| Status | composite |
| Value | 272481444419811984314541364392330301521764513048025967440820208266913954658630481 |
Factorizations
| Primary | (ID: 9677) 21215393316346682528791 (proven prime) |
| (ID: 9678) 12843572605833434178734045392095851747261914493220049765591 (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.