Factor Info

ID 172561
Size 509 digits / 1689 bits
Status composite
Value 18618916258917406155883307153655442815781044369336457675014524400802926400744967086581769374986406391157515247488540452808270111512256033005568022340410743255974095691067154464365660720089792018299453370213148945115409014451867645756384526376167151722340446607991987388979198160937523904684818939980645195463442336214684633014942650528968981231226581735930138723012727225294587012601068549309591872442046397463071060138672022012187596615545188222238424411449467159852068327308950514840794902559027144544203637

Factorizations

Primary (ID: 171723) 9216555163338267293463950322985045594600321535983382545214298930233264385719099310055218698176760823654728563858842497750151699168199798788029141 (proven prime)
(ID: 172562) 2020160019546128559715468744011096848327223465125334472968084500647323545918991580700120169713363153391109608869663103919903337365414547192965117326545841988956365680690251148493831520892543532247785443794153430279891232963898451468915685344343280795519554535341199901681019598391528669644027525108886928943821809343892439640164084222867766898235711242992683738657 (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.