Factor Info

ID 163961
Size 301 digits / 997 bits
Status composite
Value 1232991959133151413718183238369972968376046742046686794257936900863878851288711712004765792129182496106798705381063362227743426396849638233426349026566971485835685244959763902816043056337895949885012597130466747018113947342577837492850360485847260094837252080664453843154171253880078941272387610716471

Factorizations

Primary (ID: 163540) 3968622685359895554941 (proven prime)
(ID: 163962) 310685105863455806238115951809582940564487670989176912420419339905957090867490311197290453296114458480507362656263066065029885905138286597242159161902437710351837078180689802010085445392573728947634920690526658446172323051048196210942699794292231551767608480022529735594666491331 (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.