Factor Info

ID 153955
Size 778 digits / 2583 bits
Status composite
Value 2820987065437395179895699914412646105456482303827933731161600558101896403701519178543907180504842715484363596897471827973644039479846250768329734082837507101006418999937557396140222672581211305057266860605578736388366801216373148593099320277529592131790152456549353508398930183087113972237398455477346600901330265042014833587561957021061577909779530557332339933005992611561727222707975316477324045316036441625378830439603793114682554058026816035678379554957831956405070931305294592484903442937069241677737634432476130199500294467956266397908870147514301534868124902320922705563083116158453056281240944197720009897610136054910734662283468624263366366091428357975701682931826491826729244000712053938349959320903551211643802419925685029112721023844829697274661619952285221790137007

Factorizations

Primary (ID: 152140) 4082712449786591286481271 (proven prime)
(ID: 188060) 690959037682130138560598922669459339145464203426377417331456065137780562599637887624823445458580477702181056735970586711935145120369307003835497615897974143077932868849540735509421926276684965630636565507531796597794642315317294306456468972164551908121298132800207332151687140029684871578329452072214042825135016629893026083289428597054290512264934135492271885331489117051624489585982689414784191760252788231294900903028366062442567590679221927771453447854344703169589502052519050756734137565149048089015181287959716595223897278562881912659578628291004375957460363868177116784391698562174378646659097980249959315238820340353701310605671487365579982459965287905766027624587134195866509582247134549577971527766128781933453902906377179490158937549745057417 (composite)
Secondary (ID: 152160) × (ID: 153956)

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.