The smooth integers: the prime factor sum of the integer numbers [Les entiers friables: la somme des facteurs premiers des nombres entiers].




This picture displays the prime factor sum of the integer numbers inside [2,1025]. For example, the integer number 12 has two prime factors {2,3} and then this sum equals 5.


The so-called smooth integers are the integer numbers with very small prime factors (2, 3, 5,...) and then easy to factorize. They can be seen on this picture where the vertical segments are small and with a high luminance.


See some related pictures (including this one):



 


 


 
 
 
 


 



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