Quote:
Originally Posted by thommy
So what's next? Is it Primegrid's 666,666 exponent that is sieved for SG and TP chance or are you palnning a twin only search again, like 500,000 as the exponent. Wouldn't be that efficient. Is there sieving done yet?

Well, we actually have two possible directions for the next exponent:
1.) Test n=500,000 as planned earlier. I think cipher's sieving 150G, you'll have to ask him how the progress is on that range.
2.) Change course and follow Gary, Robert, et al's advice on this thread:
http://www.mersenneforum.org/showthr...?t=8479&page=2
They're suggesting to sieve a broad k and n range. Sieving will be less efficient, but the LLR tests should not take as long. In that case, the nrange will be from n=450,001 to n=524,288, and the k range will be from k=3 to k=2.8M.
I haven't made any final decisions as to which choice to take. The default is option 1, but I'm open to suggestions.