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Message boards : The Riesel Problem : k=444,637

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Christopher Siegert
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Joined: 5 Jul 09
Posts: 232
ID: 42986
Credit: 77,011,345
RAC: 0
321 LLR Amethyst: Earned 1,000,000 credits (1,041,657)Cullen LLR Amethyst: Earned 1,000,000 credits (1,366,558)PPS LLR Sapphire: Earned 20,000,000 credits (22,177,547)PSP LLR Amethyst: Earned 1,000,000 credits (1,521,444)SoB LLR Amethyst: Earned 1,000,000 credits (1,751,070)SR5 LLR Amethyst: Earned 1,000,000 credits (1,100,031)SGS LLR Amethyst: Earned 1,000,000 credits (1,014,953)TRP LLR Ruby: Earned 2,000,000 credits (3,647,371)Woodall LLR Amethyst: Earned 1,000,000 credits (1,479,507)Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (41,181)PPS Sieve Sapphire: Earned 20,000,000 credits (29,702,366)TRP Sieve (suspended) Silver: Earned 100,000 credits (206,682)GFN Jade: Earned 10,000,000 credits (11,960,980)
Message 54122 - Posted: 8 May 2012 | 2:49:58 UTC

What's the deal with k=444,637? Why is it being tested for such large N values?

Profile DaveBProject donor
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Joined: 20 Jun 09
Posts: 351
ID: 42198
Credit: 11,898,570
RAC: 0
321 LLR Gold: Earned 500,000 credits (547,769)Cullen LLR Silver: Earned 100,000 credits (158,867)PPS LLR Silver: Earned 100,000 credits (162,534)PSP LLR Silver: Earned 100,000 credits (134,373)SoB LLR Gold: Earned 500,000 credits (510,012)SR5 LLR Silver: Earned 100,000 credits (266,757)SGS LLR Gold: Earned 500,000 credits (510,560)TRP LLR Silver: Earned 100,000 credits (242,439)Woodall LLR Gold: Earned 500,000 credits (508,989)321 Sieve Silver: Earned 100,000 credits (200,123)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (229,801)PPS Sieve Ruby: Earned 2,000,000 credits (4,317,221)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (21,147)TRP Sieve (suspended) Silver: Earned 100,000 credits (333,494)AP 26/27 Bronze: Earned 10,000 credits (24,117)GFN Ruby: Earned 2,000,000 credits (3,730,320)
Message 54342 - Posted: 11 May 2012 | 1:23:17 UTC - in response to Message 54122.

That number is still unproven. The full list taken from another post on this page is :--

2293, 9221, 23669, 31859, 38473, 40597, 46663, 67117, 74699, 81041, 93839, 97139, 107347, 121889, 129007, 143047, 146561, 161669, 192971, 206039, 206231, 215443, 226153, 234343, 245561, 250027, 252191, 273809, 304207, 315929, 319511, 324011, 325123, 327671, 336839, 342847, 344759, 362609, 363343, 364903, 365159, 368411, 371893, 384539, 386801, 397027, 398023, 402539, 409753, 444637, 470173, 474491, 477583, 485557, 494743, 502573

So there are 6 even higher still to be tested.
____________
Member team AUSTRALIA
My lucky number is 9291*2^1085585+1

HellGauss
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Joined: 22 Jan 12
Posts: 36
ID: 128024
Credit: 4,798,956
RAC: 0
321 LLR Bronze: Earned 10,000 credits (80,384)Cullen LLR Bronze: Earned 10,000 credits (47,259)ESP LLR Bronze: Earned 10,000 credits (20,394)PPS LLR Silver: Earned 100,000 credits (111,379)PSP LLR Silver: Earned 100,000 credits (264,107)SoB LLR Silver: Earned 100,000 credits (338,553)SR5 LLR Bronze: Earned 10,000 credits (65,445)TRP LLR Bronze: Earned 10,000 credits (80,579)Woodall LLR Bronze: Earned 10,000 credits (48,743)PPS Sieve Ruby: Earned 2,000,000 credits (2,656,348)TRP Sieve (suspended) Bronze: Earned 10,000 credits (87,598)GFN Gold: Earned 500,000 credits (995,737)
Message 54533 - Posted: 16 May 2012 | 13:00:40 UTC

I get those kind of WU too.

However that's quite strange.

For k=444637 and k=342847 we are checking very large value of n, and probably not sequentially. Why this? It is better to check lower values, which are more probable to be prime and also are less cpu-consuming. Furthermore if we found a prime for larger n, we still have to check smaller n to find the smallest n for that k.

This is a non-sense.
____________

Konstantin Manz
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Joined: 20 Apr 08
Posts: 169
ID: 21694
Credit: 16,197,446
RAC: 0
321 LLR Silver: Earned 100,000 credits (115,153)Cullen LLR Bronze: Earned 10,000 credits (10,974)ESP LLR Bronze: Earned 10,000 credits (11,571)PPS LLR Ruby: Earned 2,000,000 credits (2,074,773)PSP LLR Silver: Earned 100,000 credits (104,595)SoB LLR Silver: Earned 100,000 credits (126,157)SR5 LLR Silver: Earned 100,000 credits (149,712)SGS LLR Silver: Earned 100,000 credits (277,818)TRP LLR Gold: Earned 500,000 credits (508,734)Woodall LLR Bronze: Earned 10,000 credits (17,219)PPS Sieve Ruby: Earned 2,000,000 credits (2,119,298)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (10,227)TRP Sieve (suspended) Bronze: Earned 10,000 credits (21,181)GFN Bronze: Earned 10,000 credits (31,562)PSA Jade: Earned 10,000,000 credits (10,617,327)
Message 54534 - Posted: 16 May 2012 | 13:13:51 UTC - in response to Message 54533.

Furthermore if we found a prime for larger n, we still have to check smaller n to find the smallest n for that k

Wrong. The goal of the Riesel problem is to find primes for those k's, doesn't matter if they're the smallest to prove the conjecture.
and probably not sequentially

I doubt it... They were issued sequentially (except those eliminated by sieve), however they are not completed sequentially because that depends when they get completed by users.

HellGauss
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Joined: 22 Jan 12
Posts: 36
ID: 128024
Credit: 4,798,956
RAC: 0
321 LLR Bronze: Earned 10,000 credits (80,384)Cullen LLR Bronze: Earned 10,000 credits (47,259)ESP LLR Bronze: Earned 10,000 credits (20,394)PPS LLR Silver: Earned 100,000 credits (111,379)PSP LLR Silver: Earned 100,000 credits (264,107)SoB LLR Silver: Earned 100,000 credits (338,553)SR5 LLR Bronze: Earned 10,000 credits (65,445)TRP LLR Bronze: Earned 10,000 credits (80,579)Woodall LLR Bronze: Earned 10,000 credits (48,743)PPS Sieve Ruby: Earned 2,000,000 credits (2,656,348)TRP Sieve (suspended) Bronze: Earned 10,000 credits (87,598)GFN Gold: Earned 500,000 credits (995,737)
Message 54545 - Posted: 16 May 2012 | 18:49:15 UTC

As discussed in the doublecheck topic there are some advantages on knowing what is the smallest n for that k (for statistical analysis about primes), even if this is irrelevant for the Riesel conjecture.

And, of course, WU are not completed sequentially (it depends on each user machine), but they *should* be started sequentially. I *doubt* that PrimeGrid has sent all WU up to n=9M for that two values of k.
____________

Christopher Siegert
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Joined: 5 Jul 09
Posts: 232
ID: 42986
Credit: 77,011,345
RAC: 0
321 LLR Amethyst: Earned 1,000,000 credits (1,041,657)Cullen LLR Amethyst: Earned 1,000,000 credits (1,366,558)PPS LLR Sapphire: Earned 20,000,000 credits (22,177,547)PSP LLR Amethyst: Earned 1,000,000 credits (1,521,444)SoB LLR Amethyst: Earned 1,000,000 credits (1,751,070)SR5 LLR Amethyst: Earned 1,000,000 credits (1,100,031)SGS LLR Amethyst: Earned 1,000,000 credits (1,014,953)TRP LLR Ruby: Earned 2,000,000 credits (3,647,371)Woodall LLR Amethyst: Earned 1,000,000 credits (1,479,507)Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (41,181)PPS Sieve Sapphire: Earned 20,000,000 credits (29,702,366)TRP Sieve (suspended) Silver: Earned 100,000 credits (206,682)GFN Jade: Earned 10,000,000 credits (11,960,980)
Message 54560 - Posted: 16 May 2012 | 22:05:44 UTC

Sorry. I guess I wasn't clear enough. I was getting WUs that had n=9M+. Some of the WUs were only 6M or 7M, but still, that is much larger than the typical leading edge of any other k value; ~5.4M

I was just wondering why k=444,637 was special. In fact, I'm still wondering why I got such lengthy work units. We weren't given enough time to finish the 9M on time.

Message boards : The Riesel Problem : k=444,637

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