The so-called 7-smooth integers are the integer numbers with prime factors not greater than 7
and then easy to factorize. They can be seen on this picture where the vertical segments are white inside [2,1023].
See some related pictures (including this one):
(CMAP28 WWW site: this page was created on 09/22/2022 and last updated on 11/07/2022 14:30:11 -CET-)
