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Old 2020-10-15, 07:56   #2166
VBCurtis's Avatar
Feb 2005
Riverside, CA

11FC16 Posts

Originally Posted by KEP View Post
Good to hear. I'm not sure how srbsieve and srsieve handles the squared k's, but other than that, I can see that you have to go through 15 phases and the highest you have to sieve is: p=78,267,000 for (at most) 31458 k's. I'm not sure how fast your core is, but the sieving aswell as the running towards n=2500 could complete very fast. Sure am looking forward to see you estimation of completion
I completed k's from 1 to 1M to n=2500 in 100 thread-hours on an old laptop, so I'm comfortable I have the patience to get R400 to 10k. I'll run srbsieve on the laptop in blocks of a few milllion k's, with surviving k's moved to a desktop to sieve and test n=2500-10000. I'm playing with srbsieve sieve & phase settings, so I may find some more speed; I'm trying 5 phases this time rather than 4 last time, for instance. 15 is far too many! Also, I sieve deeper than 78e6 on the last two phases; perhaps I'll try a bit less sieving to see if overall speed improves.

I expect 100-120 days to reach 2500, and less than twice that to reach 10,000.
I'll update when I get halfway to 2500.

There are about 5000 k's left from the first 1 million; with the conjecture just over 20M, I expect just under 100,000 k's left at n=2500 for the entire base.
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