Factor Info

ID 161998
Size 642 digits / 2131 bits
Status composite
Value 253226613099011457176243278883512371816771199596970572765062692153248589778079358654648970642866363017073735972597119841262083631563500332157052302560114078289418610768056025983127453333392309408335534089467183038480756247743222562357406873091791241220236340354950111281203846874367888956855582459472399492012602752082138413649568129797115319743970296843937991193532129074297574183651184573289103166747520115307067659124119381144306889269640350240604634747208745674095329105978963037596760360700578636919444692647598388371807718378028651446669345818309979343172124555363898835900769112831367557186141745751018696527225108916759717605398822143

Factorizations

Primary (ID: 193711) 179886917994329416379854218754453 (proven prime)
(ID: 194271) 1407698880621179642372833869357866783390366889475738155740039470036760248286672562470225932909614366892467821621226963330938411502379626133902802754816833160236868162789911752777291138504349988030344373730429134035463124310180631813144118616916786626067701532792708832241531069547280837189482296103599186231153005626256448150309734498935433214206131705670297360627234616042823899373464811349526362806295772414724093689751892272881445740688543012919998308318796201897748707070685355855906506850280944342287706484906937890867566379458095465893743142716055707067345138970954748356783810758235845384955673131089731 (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.