Factor Info
| ID | 8520 |
| Size | 84 digits / 278 bits |
| Status | composite |
| Value | 306772946387007842943747720972938592506154119011407582135393592973762586953218938751 |
Factorizations
| Primary | (ID: 8201) 38327966300231909291101 (proven prime) |
| (ID: 18231) 8003893135993277727353130138493330801604329648792016235232651 (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.