Factor Info

ID 42896
Size 259 digits / 860 bits
Status composite
Value 4037906702626267814427127055788163431270610105878909152786298183669273109126880305792145826481920189492868672969608172367462938962989246871149810973464421707096603409301856370514073838767167835444571147512734884282590704609339721538740087572317633425051686489

Factorizations

Primary (ID: 2) 159512939815855788121 (proven prime)
(ID: 42897) 25313975827213077150062786308050611012080787825382218989686511774313002124369358364572767967433168126682300233834466219140391563425798284287494652973078633208382796566560829612979391975106612415075513483033615535435896770795356973060945409 (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.