Factor Info

ID 42177
Size 272 digits / 902 bits
Status composite
Value 28587777834486034295820020107506473383219601537764865427343662239024809678117917226842145528614251536459938567558245172351035927769120283098411542457941696823671452135727356470412443652385182509977469188883724400225424636225157488351154164039568356386437185741678755216197

Factorizations

Primary (ID: 46082) 44272752777961858792615090142253796109363325349 (proven prime)
(ID: 46083) 645719455888825843353786564649266812399495222409491655726217181814233135865149093321998069866902455803328536502258085882059392801767735030563189739399979414321283670960758134215475073994299881198931778236951800541031839832353 (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.