Factor Info

ID 20640
Size 255 digits / 846 bits
Status composite
Value 304128105484216980504257654876643098935855652948221415821475300325787822888349196724873909268848402886570596837091995689019034286606488693662437851273110461222566881833429554934308191847477354698389813470618181473209461769548977290358810188965991353546541

Factorizations

Primary (ID: 7468) 179763436784239734042181 (proven prime)
(ID: 20641) 1691824049009729310373783392112200052135683636153138721143768830355038580908396195989099339303061664825685531497388456770743121810138638915997341882115831334962378448218697261415809789060225535227431662084497383524962513799804143561 (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.