Factor Info

ID 149947
Size 278 digits / 921 bits
Status composite
Value 15870874627639813291540554263781132330516102685261163947072161295744203021436669681058941816783923403484251770740368446843217152081826657438995134582946273579637064220398151873708079162847370410924328458442649442622898425389106076142726737268081352760101859088922869703844364701

Factorizations

Primary (ID: 150474) 21296278837582886236074794813 (proven prime)
(ID: 184013) 745241680421251810334462690596681079760032682379588205136424410645021412920800888284279597636921008567493889546792349452590448831965326964066887404287000098671518155341298815894368938471679691158962765141755143637779388734799228079084479536188215777 (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.