Roy Johnson,
I am pretty sure that all combinations need to be considered initially as you can see by my contributions elsewhere in this thread. It is possible to short-circuit early in some cases though, which may be a significant improvement. For instance - here are some ideas: I have only chosen to implement the first 1 in my Perl code. This is because my combinations aren't gathered left to right. I will see if I can't modify the code to take advantage of all 3 of these short cuts.

Cheers - L~R

In reply to Re^5: OT: Finding Factor Closest To Square Root by Limbic~Region
in thread OT: Finding Factor Closest To Square Root by QM

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