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Message boards : Project Staging Area : Are PPS sieve results used in k=27 and k=121 projects?

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Profile MyrskylyhtyProject donor
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Joined: 27 Jan 18
Posts: 116
ID: 972376
Credit: 531,226,510
RAC: 5,986
Discovered 1 mega primeFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 1 prime in the 2021 Tour de Primes321 LLR Double Bronze: Earned 100,000,000 credits (101,962,278)Cullen LLR Gold: Earned 500,000 credits (533,200)ESP LLR Gold: Earned 500,000 credits (808,848)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (472,570)PPS LLR Jade: Earned 10,000,000 credits (15,006,841)PSP LLR Amethyst: Earned 1,000,000 credits (1,379,782)SoB LLR Ruby: Earned 2,000,000 credits (3,570,885)SR5 LLR Amethyst: Earned 1,000,000 credits (1,583,505)SGS LLR Silver: Earned 100,000 credits (128,562)TRP LLR Amethyst: Earned 1,000,000 credits (1,126,846)Woodall LLR Silver: Earned 100,000 credits (380,849)321 Sieve (suspended) Gold: Earned 500,000 credits (573,292)Generalized Cullen/Woodall Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,069,231)PPS Sieve Emerald: Earned 50,000,000 credits (61,446,588)AP 26/27 Ruby: Earned 2,000,000 credits (2,494,531)GFN Double Silver: Earned 200,000,000 credits (253,613,186)PSA Emerald: Earned 50,000,000 credits (85,075,515)
Message 116290 - Posted: 22 Mar 2018 | 9:10:17 UTC

Couldn't find info on this:

Since PPS sieve is currently sieving range n=6-9M, will/are those results being used for the k=27 and k=121 PRPNet projects? Their leading edges are at n=6,829,102 and n=7,648,452 respectively for the +1 form.

PPS sieve is a very active project that is also utilizing the GPU very well, so you'd think that it will at some point go deeper than the current/past cpu(?) sieve for 27 and 121.

Thank you :)

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JimBProject donor
Honorary cruncher
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Joined: 4 Aug 11
Posts: 918
ID: 107307
Credit: 977,945,376
RAC: 1,661
Discovered 1 mega prime321 LLR Ruby: Earned 2,000,000 credits (3,327,838)Cullen LLR Turquoise: Earned 5,000,000 credits (5,031,868)ESP LLR Turquoise: Earned 5,000,000 credits (5,064,082)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,038,750)PPS LLR Turquoise: Earned 5,000,000 credits (5,000,461)PSP LLR Turquoise: Earned 5,000,000 credits (7,674,374)SoB LLR Sapphire: Earned 20,000,000 credits (42,604,648)SR5 LLR Jade: Earned 10,000,000 credits (11,829,173)SGS LLR Ruby: Earned 2,000,000 credits (2,537,053)TRP LLR Ruby: Earned 2,000,000 credits (2,291,092)Woodall LLR Turquoise: Earned 5,000,000 credits (5,046,412)321 Sieve (suspended) Jade: Earned 10,000,000 credits (10,057,614)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,002,919)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,005,451)PPS Sieve Emerald: Earned 50,000,000 credits (52,042,965)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,341,676)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,070,804)AP 26/27 Jade: Earned 10,000,000 credits (10,742,251)GFN Emerald: Earned 50,000,000 credits (50,000,251)WW Ruby: Earned 2,000,000 credits (2,688,000)PSA Double Gold: Earned 500,000,000 credits (728,547,693)
Message 116291 - Posted: 22 Mar 2018 | 10:48:53 UTC
Last modified: 22 Mar 2018 | 10:49:27 UTC

Yes, of course. PPS9M-12M is sieved to p=20000T and will probably be moving to BOINC (replacing 6M-9M) before k=27 and k=121 need those candidates. It's also possible to sieve just those k's much higher much faster if necessary. Every time I load work on k=27 and k=121, I use (or create) the latest sieve file incorporating all factors more than an hour or so old.

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Profile MyrskylyhtyProject donor
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Joined: 27 Jan 18
Posts: 116
ID: 972376
Credit: 531,226,510
RAC: 5,986
Discovered 1 mega primeFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 1 prime in the 2021 Tour de Primes321 LLR Double Bronze: Earned 100,000,000 credits (101,962,278)Cullen LLR Gold: Earned 500,000 credits (533,200)ESP LLR Gold: Earned 500,000 credits (808,848)Generalized Cullen/Woodall LLR Silver: Earned 100,000 credits (472,570)PPS LLR Jade: Earned 10,000,000 credits (15,006,841)PSP LLR Amethyst: Earned 1,000,000 credits (1,379,782)SoB LLR Ruby: Earned 2,000,000 credits (3,570,885)SR5 LLR Amethyst: Earned 1,000,000 credits (1,583,505)SGS LLR Silver: Earned 100,000 credits (128,562)TRP LLR Amethyst: Earned 1,000,000 credits (1,126,846)Woodall LLR Silver: Earned 100,000 credits (380,849)321 Sieve (suspended) Gold: Earned 500,000 credits (573,292)Generalized Cullen/Woodall Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,069,231)PPS Sieve Emerald: Earned 50,000,000 credits (61,446,588)AP 26/27 Ruby: Earned 2,000,000 credits (2,494,531)GFN Double Silver: Earned 200,000,000 credits (253,613,186)PSA Emerald: Earned 50,000,000 credits (85,075,515)
Message 116292 - Posted: 22 Mar 2018 | 11:18:25 UTC - in response to Message 116291.
Last modified: 22 Mar 2018 | 11:19:00 UTC

Nice!

That means that actually even though other PPS k's will take years to reach that range, we can already utilize some of the extensive sieve work in k=27 and k=121 in PRPNet.

Is there some mathematical reason why 27=3^3 and 121=11^2 have their own PRPNet project and they're not done alongside other PPS searches? Or are they just older projects that have been alive longer than other PPS k projects? (This applies to k=3 too, but for it is separate probably also because its the most efficient PPS k?)

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JimBProject donor
Honorary cruncher
Send message
Joined: 4 Aug 11
Posts: 918
ID: 107307
Credit: 977,945,376
RAC: 1,661
Discovered 1 mega prime321 LLR Ruby: Earned 2,000,000 credits (3,327,838)Cullen LLR Turquoise: Earned 5,000,000 credits (5,031,868)ESP LLR Turquoise: Earned 5,000,000 credits (5,064,082)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,038,750)PPS LLR Turquoise: Earned 5,000,000 credits (5,000,461)PSP LLR Turquoise: Earned 5,000,000 credits (7,674,374)SoB LLR Sapphire: Earned 20,000,000 credits (42,604,648)SR5 LLR Jade: Earned 10,000,000 credits (11,829,173)SGS LLR Ruby: Earned 2,000,000 credits (2,537,053)TRP LLR Ruby: Earned 2,000,000 credits (2,291,092)Woodall LLR Turquoise: Earned 5,000,000 credits (5,046,412)321 Sieve (suspended) Jade: Earned 10,000,000 credits (10,057,614)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,002,919)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,005,451)PPS Sieve Emerald: Earned 50,000,000 credits (52,042,965)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,341,676)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,070,804)AP 26/27 Jade: Earned 10,000,000 credits (10,742,251)GFN Emerald: Earned 50,000,000 credits (50,000,251)WW Ruby: Earned 2,000,000 credits (2,688,000)PSA Double Gold: Earned 500,000,000 credits (728,547,693)
Message 116302 - Posted: 22 Mar 2018 | 13:02:53 UTC

They were from an external prime finding effort that merged with PrimeGrid (before my time here). See http://www.primegrid.com/forum_thread.php?id=2414.

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Message boards : Project Staging Area : Are PPS sieve results used in k=27 and k=121 projects?

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