New Strategy

Citrix · 2004-08-04, 19:06

I was thinking, that since the new PRP is really fast compared to the old one, it might be better to take k=214519, which is the heaviest k and most likely to produce a prime, and PRP it. If there are some bugs only a few numbers may produce false residues, the rest can be used for double check. But if we find a prime, our work will be really reduced.

What do you all think?

Citrix

ValerieVonck · 2004-08-05, 16:36

Citrix ok for me.
When my range for RieselSieve is completed, I think I will re-join your search.

Could you please make a list with the work to do?

k weight of K #tests

ltd · 2004-08-05, 16:55

I think we should stay with the strategy we use at the moment. The advantage of crunching all k at the same time is that when finding a prime only a some other PC calclulate a residue for the same K and so there are not so many wasted results before we switch from one k to the next.

Lars

Citrix · 2004-08-05, 19:02

My computers will crunch all the k's.

k=214519 is for people who want to use PRP3. Soon LLR4 will support +1 numbers also and LLR4 will be faster than PRP3.

Citrix

geoff · 2004-10-31, 11:47

How large does n have to become before it is worthwhile using P-1 before the prp test?

If one n was tested to a higher level and no prime found then it could be an opportunity to introduce P-1 testing, and maybe get some of the factoring people interested in the project.

ltd · 2004-10-31, 12:25

I can not tell you when it will really makes sence to start p-1 testing again but i make tests with p-1 from time to time. The last tests have been made with n around 1.25 Mil. At that level p-1 is not a choise.

With the sieving level we have reached i would expect that p-1 will be interesting at around n=1.7 Mil. But until the time we reach that with PRP tesing we should have sieved much deeper then that.

I think we will really catch up at a level around n=2.4 Mil.

But that are only my guesses. I will make some p-1 tests from time to see if i am correct.

Lars

2004-08-04, 19:06	#1
Citrix Jun 2003 2×7×113 Posts	New Strategy I was thinking, that since the new PRP is really fast compared to the old one, it might be better to take k=214519, which is the heaviest k and most likely to produce a prime, and PRP it. If there are some bugs only a few numbers may produce false residues, the rest can be used for double check. But if we find a prime, our work will be really reduced. What do you all think? Citrix

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2004-08-05, 16:36	#2
ValerieVonck Mar 2004 Belgium 1511₈ Posts	Citrix ok for me. When my range for RieselSieve is completed, I think I will re-join your search. Could you please make a list with the work to do? k weight of K #tests

2004-08-05, 16:55	#3
ltd Apr 2003 2²×193 Posts	I think we should stay with the strategy we use at the moment. The advantage of crunching all k at the same time is that when finding a prime only a some other PC calclulate a residue for the same K and so there are not so many wasted results before we switch from one k to the next. Lars

2004-08-05, 19:02	#4
Citrix Jun 2003 3056₈ Posts	My computers will crunch all the k's. k=214519 is for people who want to use PRP3. Soon LLR4 will support +1 numbers also and LLR4 will be faster than PRP3. Citrix

2004-10-31, 11:47	#5
geoff Mar 2003 New Zealand 13·89 Posts	How large does n have to become before it is worthwhile using P-1 before the prp test? If one n was tested to a higher level and no prime found then it could be an opportunity to introduce P-1 testing, and maybe get some of the factoring people interested in the project.

2004-10-31, 12:25	#6
ltd Apr 2003 2²×193 Posts	I can not tell you when it will really makes sence to start p-1 testing again but i make tests with p-1 from time to time. The last tests have been made with n around 1.25 Mil. At that level p-1 is not a choise. With the sieving level we have reached i would expect that p-1 will be interesting at around n=1.7 Mil. But until the time we reach that with PRP tesing we should have sieved much deeper then that. I think we will really catch up at a level around n=2.4 Mil. But that are only my guesses. I will make some p-1 tests from time to see if i am correct. Lars