Factor Info
| ID | 28991 |
| Size | 208 digits / 689 bits |
| Status | composite |
| Value | 1548376540974278225616958357763258861321655428661651801815774066237471668330278330993480196798812309456547937813298740662402711358746726922277054993692941567766638877794502448926528705962060581782501184847921 |
Factorizations
| Primary | (ID: 16447) 2630523871858031528145586480948032725521 (proven prime) |
| (ID: 28992) 588619079849142527335897954711755903260560006852432693759900095717214289758553829465315345416733918818330453188872635064288891572345985281581306456588211154937490234401 (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.