Factor Info

ID 161351
Size 321 digits / 1065 bits
Status composite
Value 257220516939636521886204538325668971319100117687344910659684261640590248002916982795030408523184732694020735897409209241714806158624378535819872627425095576685546692884153596300521173648134108084842919557766907124801366588963249128293298272244285758837158971595273607185213001240576578248520220531523552257842096640053061

Factorizations

Primary (ID: 161352) 25250715604291014034039 (proven prime)
(ID: 161353) 10186662468129236316591503954415268951395208526240793409598425270933125709834074940556527801499828670391903674995392882021455113660295157401544859544498457697606190372289277431707541708498680655616672886189411372571408129300650280770349193394342918263726743434341633634931532426299222041310459268899 (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.