Factor Info
| ID | 255 |
| Size | 66 digits / 219 bits |
| Status | composite |
| Value | 691297416636561482329789040427494806396080828054508866508000978361 |
Factorizations
| Primary | (ID: 42) 28546908862296149233369 (proven prime) |
| (ID: 256) 24216191671442408226762026802756956706931169 (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.