Quote:
Originally Posted by xilman
The work curve has a very flat minimum. It doesn't matter very much whether you run more curves at a lower B1 or fewer at a higher one, as long as you don't push it too far. To an excellent approximation, the product B1*#curves is the figure of merit.

Does the above apply only to stage one?
What about the B2 bound?
For P−1, I think it normally doesn't find factors beyond the bound B2, unless exceptionally by BrentSuyama extension.
Does ECM routinely find factors beyond the B2 bound? What is the effect of increasing the B2 bound, does it merely increase the probability of finding a factor within the B2 bound?