Factor Info

ID 163996
Size 315 digits / 1045 bits
Status composite
Value 253638050308090981708457702049401302575057606980966580043867517631897918581748906748107038103237804093338275794234108824079891498381351879598867856627349679392451174222884000855084327241260861951649929369501088139966330833151845351260259977284248149538360743973817828510111146616945400416919421828683203957699146933

Factorizations

Primary (ID: 163561) 715589319888957668605573 (proven prime)
(ID: 163997) 354446388813418197852135647604734706965031594597804114880796726804253391992143475077007348160973502205790486114978660741378281147676816349424930038029533563443618901495448067309297655511229913880011851006936128707668037988716933759580594664124284296751352518199031843919075377207470394846321 (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.