Factor Info
| ID | 521 |
| Size | 93 digits / 307 bits |
| Status | composite |
| Value | 230676711409876913343579667388953729260158729890577377664521498252354142672948201915647565233 |
Factorizations
| Primary | (ID: 9207) 17218960634655314412985745259631698569 (proven prime) |
| (ID: 9208) 13396668724917759936969822396834064307947197060095457257 (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.