I wanted to guy all of you heads up that the next release of ECMNet (v2.5.0) will support SBFACTOR as well as GMP-ECM. I made the enhancement due to a request from some individuals on the Riesel Sieve project, one of whom is currently testing it.

At this time the B1 values and number of curves are hard-coded, but that will change by the time of the public beta. If you are interested in using this for your project, send me an e-mail at rogue (at) wi.rr.com.