I guess you figured out that you don't need to P-1 those that are prime.

Also you didn't post which B1, b2 values you are using.

You shouldn't have too much of a problem staying ahead of the testing. Especially if you decide to put both CPU's on the project once everything is working.

Let us know where your at from time to time with repect to n-level, we should be able to tell by the factor you submit. If you start falling behind I'm sure some others will start helping out withthe p-1 effort.

Jason