Factor Info

ID 157660
Size 752 digits / 2497 bits
Status composite
Value 42381803816897577029991926328326406422563442421592809368961635171289566389664543940392231707055380351679058999691641235317260336189861005254680171676912576706580561431580616510792700906885429211380603032753412477565686961034893198921098273595563069670377114675800734431155694555221465829620997889633374906298435262179540443267883596809183635933089328428643267262327952268024620531855334218813669752571765847892682107602490940320259740625931947265383999575429244152414430613983847884688613669229965077202156174925931023600128857989082277582852439532500621390906291736798379153355021452505482779563978073685185849296007601455360500434639546852944372415365026430101578878712291870258560636690405336509829049209066758893108204438426377041239197843211664787

Factorizations

Primary (ID: 3480) 999802854724715300883845411 (proven prime)
(ID: 157661) 42390160836825115588855493014660391160517173719161152955900219984907208400202292406065068003863454823622653167117142718267649312567978889195345171448698900609861622499923192435198647805301473085459870710732646277635197110379783106859364643585439092987416581390411095652762633580837979593442552920017601125917727542761675250655242315211256206244194778174773525806281009077146923613439228569092804149814222737201799737420443705062690265053242893340197748699202481669902346897596208300419896749322715817354012343672278643571978007913472906479660976826913977989720522341636977513978358735701894216909485211218933101764308452976359909783735176429479167261902779843105949074783901309276848781249822377552940178009810020945789124817 (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.