Factor Info
| ID | 16531 |
| Size | 68 digits / 223 bits |
| Status | composite |
| Value | 12636064974493030973531240886610572599497421529871157161371960570761 |
Factorizations
| Primary | (ID: 16532) 1972618762904267665190337601 (proven prime) |
| (ID: 16533) 6405730905595298015162543537765377017161 (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.