Factor Info

ID 12943
Size 309 digits / 1026 bits
Status composite
Value 581477555434051426022582496501294257059949982713614304721621279873354816478835059722700491680158486708956168969412989676165111448457176364323301191528690531574038497920322546087957575463452456883253634485725592634955999790251759624255464314163955070147130978542963594953150139224039085638319121399601233660467

Factorizations

Primary (ID: 4276) 813201725710097952736361977 (proven prime)
(ID: 12944) 715047124286778814883254072398495291023846211997742629106642216617302068507053015228785507604192661512441983233160103224432037191397700027821648774622381586452821979610407713162714811416111682616094927289059076043428271388084290337117069894780968250332705414805398252802900159071371 (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.