Factor Info

ID 172573
Size 521 digits / 1729 bits
Status composite
Value 15720439409020097100344337875626737113382774327290809728253378594856869202553204026702223267787051299875479728609269662712916355991413340289811757139214216499206940296624524776110618774699999090400835641871311400964315301195698488889398424857698983903574857747890754517658938926104022863013261948085261287555981778543850911720159012942319924322494032345578397148691982040664991886673833118737736035136157958885741631820117257554210404555356976990814926649272569120194616092217119046784948497711550032640839890216586169143

Factorizations

Primary (ID: 171725) 10083863422937321230792850197348101041751242013030332981084126227637370457 (proven prime)
(ID: 172574) 1558969885813953413956127055611696029242982256486548039624309295662781963425139096723047635051096536321922940184672030922633335801297171851265753333583564400057501274745885230525493898023104017982155013897087077103504942509005786979956652312942626513441684851609741429496563442363672900993283209890683476579989466731235690354520651615473108196181893870885653382534639314468274423148032969622337737128037580635170620558460686109366931420380072182799 (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.