Factor Info

ID 128458
Size 640 digits / 2124 bits
Status composite
Value 1711739621596935460686089468862697105460203409550016821393346520806154592767407597575768597144859969429888687292383653357896154478927155308569246472941743878419690333609964736031629593715903351752104763196112259104749403938849830868240318827284964656340545151051399997074444264207601667960651031462499654208159746781661784603521950909219551784153436642639488404458438945038710288621534488375616088508042843392971348710182875952301452852468165556913635433924947541927548233897158018373157904528692505036821904463628555953523308039547794550779285864863146611870535524938831376013848735634480195693248489360256075062001018480004969704304246221

Factorizations

Primary (ID: 161) 148953605644242840431762356563438185533394886582362797645241 (proven prime)
(ID: 128459) 11491763587685232897756687883194312133830348736447524514959176089431060645745041669177401342779156711812862442052306275727748769575754343350632133818549509884553636715197076020385952697477568268382480681338865654262981152628888042926234019943940432158625215920186941518878585582251675308063721309676585204383121696024156516532421318034486111974157452908727973117020124491338558338465228446160413391591844078385171941277830529062848783486491686702808595366445399946720194380693654189173980832112104068394782835527012204565278728170925822496405854672481987180486614334270652459993781 (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.