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Message boards : Number crunching : Bad luck club

Author Message
Omega
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Joined: 20 Apr 08
Posts: 181
ID: 21694
Credit: 27,596,829
RAC: 0
Found 1 prime in the 2020 Tour de Primes321 LLR Silver: Earned 100,000 credits (154,337)Cullen LLR Bronze: Earned 10,000 credits (65,587)ESP LLR Bronze: Earned 10,000 credits (66,542)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (72,412)PPS LLR Ruby: Earned 2,000,000 credits (4,633,705)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 (161,281)SGS LLR Silver: Earned 100,000 credits (486,446)TRP LLR Gold: Earned 500,000 credits (639,881)Woodall LLR Silver: Earned 100,000 credits (115,733)321 Sieve (suspended) Bronze: Earned 10,000 credits (10,368)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)AP 26/27 Bronze: Earned 10,000 credits (12,129)GFN Turquoise: Earned 5,000,000 credits (8,166,478)WW Bronze: Earned 10,000 credits (12,000)PSA Jade: Earned 10,000,000 credits (10,617,327)
Message 140078 - Posted: 3 May 2020 | 20:27:56 UTC

Following the old saying 'misery loves company' this thread is a place for crunchers to share their bad luck stories, i.e. large number of tasks in a subproject without a hit.

Number of tasks should exceed 2*(server-average+10%)
[Server-average = Subproject status -> Completed/Primes]
[+10% is to compensate for increasing number size]

My bad luck subproject is GFN-15:
I am at approximately 40.000 tasks without a hit, which is almost five times the server average (7685*1.1=8454).

Yves Gallot
Volunteer developer
Project scientist
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Joined: 19 Aug 12
Posts: 672
ID: 164101
Credit: 305,042,960
RAC: 0
GFN Double Silver: Earned 200,000,000 credits (305,042,960)
Message 140090 - Posted: 4 May 2020 | 9:38:08 UTC

Another method is to compute the gap for b = 170M and the expected number of primes is one in [170M; 170M + 107000].
The number of candidates in that range is
#candidates = e^-gamma * C_n * gap / log(p_max)
= 0.5614595 * 5.80266 * 107000 / log(26000e15) ~= 7800.
Your estimate coincides but there are two tasks per candidate (one workunit) then the number of tasks is 15600.
You are unlucky but not so much.

Profile matzetoni
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Joined: 25 Nov 17
Posts: 67
ID: 952510
Credit: 41,465,498
RAC: 11,668
Found 1 prime in the 2020 Tour de Primes321 LLR Bronze: Earned 10,000 credits (64,651)Cullen LLR Bronze: Earned 10,000 credits (72,493)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (65,043)PPS LLR Gold: Earned 500,000 credits (821,521)PSP LLR Bronze: Earned 10,000 credits (40,691)SoB LLR Bronze: Earned 10,000 credits (48,626)SGS LLR Bronze: Earned 10,000 credits (43,466)TRP LLR Bronze: Earned 10,000 credits (24,972)Woodall LLR Bronze: Earned 10,000 credits (16,701)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (33,314)PPS Sieve Amethyst: Earned 1,000,000 credits (1,119,172)AP 26/27 Gold: Earned 500,000 credits (561,977)GFN Sapphire: Earned 20,000,000 credits (27,727,928)WW Silver: Earned 100,000 credits (144,000)PSA Jade: Earned 10,000,000 credits (10,677,445)
Message 140092 - Posted: 4 May 2020 | 11:54:23 UTC - in response to Message 140078.
Last modified: 4 May 2020 | 11:55:09 UTC

My bad luck subproject is GFN-15

I had a streak of about 30k tasks without a GFN-15 once and it took me about 35k tasks to find my first GFN-16, which was a double check because my computer disconnected from the internet for seemingly no reason in the 3 minute time frame the task was being processed and I couldn't fix it, since I was out.

Your estimate coincides but there are two tasks per candidate (one workunit) then the number of tasks is 15600.

Yes, I agree. The 1 in 7685 tasks rate would only apply, if you'd check 100% first.

Omega
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Joined: 20 Apr 08
Posts: 181
ID: 21694
Credit: 27,596,829
RAC: 0
Found 1 prime in the 2020 Tour de Primes321 LLR Silver: Earned 100,000 credits (154,337)Cullen LLR Bronze: Earned 10,000 credits (65,587)ESP LLR Bronze: Earned 10,000 credits (66,542)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (72,412)PPS LLR Ruby: Earned 2,000,000 credits (4,633,705)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 (161,281)SGS LLR Silver: Earned 100,000 credits (486,446)TRP LLR Gold: Earned 500,000 credits (639,881)Woodall LLR Silver: Earned 100,000 credits (115,733)321 Sieve (suspended) Bronze: Earned 10,000 credits (10,368)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)AP 26/27 Bronze: Earned 10,000 credits (12,129)GFN Turquoise: Earned 5,000,000 credits (8,166,478)WW Bronze: Earned 10,000 credits (12,000)PSA Jade: Earned 10,000,000 credits (10,617,327)
Message 140277 - Posted: 16 May 2020 | 8:25:19 UTC

50.000 (yup, fifty-thousand) GFN-15 tasks and still... nada, niente, nichts, nothing!
Thank you PG-server for allowing me to reach this record of unluckiness.

Profile Crun-chiProject donor
Volunteer tester
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Joined: 25 Nov 09
Posts: 3070
ID: 50683
Credit: 63,378,402
RAC: 268
Eliminated 1 conjecture "k"Found 1 prime in the 2018 Tour de PrimesFound 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 Silver: Earned 100,000 credits (229,492)Cullen LLR Silver: Earned 100,000 credits (110,733)PPS LLR Jade: Earned 10,000,000 credits (11,335,374)PSP LLR Silver: Earned 100,000 credits (104,385)SoB LLR Silver: Earned 100,000 credits (106,117)SR5 LLR Silver: Earned 100,000 credits (139,802)SGS LLR Amethyst: Earned 1,000,000 credits (1,325,207)TRP LLR Gold: Earned 500,000 credits (626,755)Woodall LLR Silver: Earned 100,000 credits (122,944)321 Sieve (suspended) Silver: Earned 100,000 credits (104,900)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,599)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (515,556)PPS Sieve Jade: Earned 10,000,000 credits (11,872,830)TRP Sieve (suspended) Silver: Earned 100,000 credits (255,612)AP 26/27 Ruby: Earned 2,000,000 credits (2,583,960)GFN Sapphire: Earned 20,000,000 credits (23,334,026)WW Amethyst: Earned 1,000,000 credits (1,088,000)PSA Turquoise: Earned 5,000,000 credits (7,522,050)
Message 140278 - Posted: 16 May 2020 | 8:54:15 UTC - in response to Message 140277.

50.000 (yup, fifty-thousand) GFN-15 tasks and still... nada, niente, nichts, nothing!
Thank you PG-server for allowing me to reach this record of unluckiness.

If you continue to complain you will not definitely found nothing :)
Prime hunting is not for impatient person :)
____________
92*10^1439761-1 NEAR-REPDIGIT PRIME :) :) :)
4 * 650^498101-1 CRUS PRIME
314187728^131072+1 GENERALIZED FERMAT
Proud member of team Aggie The Pew. Go Aggie!

Profile dannyridel
Volunteer tester
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Joined: 3 Feb 19
Posts: 919
ID: 1097922
Credit: 20,097,369
RAC: 20,484
Discovered 1 mega prime321 LLR Gold: Earned 500,000 credits (506,806)Cullen LLR Silver: Earned 100,000 credits (112,212)ESP LLR Silver: Earned 100,000 credits (255,803)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (509,419)PPS LLR Ruby: Earned 2,000,000 credits (2,001,172)PSP LLR Gold: Earned 500,000 credits (616,940)SoB LLR Gold: Earned 500,000 credits (533,625)SR5 LLR Silver: Earned 100,000 credits (108,281)SGS LLR Gold: Earned 500,000 credits (501,474)TRP LLR Silver: Earned 100,000 credits (146,999)Woodall LLR Silver: Earned 100,000 credits (117,864)321 Sieve (suspended) Gold: Earned 500,000 credits (506,814)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (30,033)PPS Sieve Ruby: Earned 2,000,000 credits (2,808,043)AP 26/27 Amethyst: Earned 1,000,000 credits (1,273,545)GFN Ruby: Earned 2,000,000 credits (3,547,304)WW Turquoise: Earned 5,000,000 credits (6,148,000)PSA Silver: Earned 100,000 credits (373,034)
Message 140281 - Posted: 16 May 2020 | 10:22:06 UTC - in response to Message 140278.
Last modified: 16 May 2020 | 10:42:25 UTC

50.000 (yup, fifty-thousand) GFN-15 tasks and still... nada, niente, nichts, nothing!
Thank you PG-server for allowing me to reach this record of unluckiness.

If you continue to complain you will not definitely found nothing :)
Prime hunting is not for impatient person :)

Crunchi, I believe there's a grammar error there:
you meant that he/she won't get any primes, but you said that he'll "not find nothing", which mean he'll find something.
Grammar, grammar, grammar, ugh
For me, a Spanish learner, grammar is even more confusing.
____________
SHSIDElectronicsGroup@outlook.com

waiting for a TdP prime...
Proth "SoB": 44243*2^440969+1


Profile JamesProject donor
Project administrator
Volunteer tester
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Joined: 19 Sep 14
Posts: 99
ID: 366225
Credit: 829,511,102
RAC: 1,144,176
Discovered 1 mega primeFound 4 primes in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 1 prime in the 2021 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (8,482,494)Cullen LLR Sapphire: Earned 20,000,000 credits (20,881,088)ESP LLR Sapphire: Earned 20,000,000 credits (22,806,543)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (22,371,262)PPS LLR Sapphire: Earned 20,000,000 credits (36,988,235)PSP LLR Sapphire: Earned 20,000,000 credits (43,089,948)SoB LLR Sapphire: Earned 20,000,000 credits (20,572,202)SR5 LLR Turquoise: Earned 5,000,000 credits (8,815,713)SGS LLR Turquoise: Earned 5,000,000 credits (5,516,971)TRP LLR Sapphire: Earned 20,000,000 credits (20,046,448)Woodall LLR Sapphire: Earned 20,000,000 credits (20,351,903)321 Sieve (suspended) Sapphire: Earned 20,000,000 credits (26,182,363)Generalized Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (29,540,183)PPS Sieve Double Bronze: Earned 100,000,000 credits (111,495,825)AP 26/27 Sapphire: Earned 20,000,000 credits (29,760,523)GFN Double Bronze: Earned 100,000,000 credits (179,851,389)WW Double Bronze: Earned 100,000,000 credits (111,356,000)PSA Double Bronze: Earned 100,000,000 credits (111,434,026)
Message 140295 - Posted: 17 May 2020 | 12:37:53 UTC - in response to Message 140277.

50.000 (yup, fifty-thousand) GFN-15 tasks and still... nada, niente, nichts, nothing!
Thank you PG-server for allowing me to reach this record of unluckiness.

We all know giving the servers fish helps with your luck :)

Profile Pooh Bear 27Project donor
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Joined: 10 May 09
Posts: 746
ID: 39821
Credit: 764,809,990
RAC: 1,328,563
Discovered 1 mega primeEliminated 1 conjecture "k"Discovered 1 twin prime321 LLR Turquoise: Earned 5,000,000 credits (5,014,405)Cullen LLR Turquoise: Earned 5,000,000 credits (7,681,452)ESP LLR Turquoise: Earned 5,000,000 credits (5,421,149)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,842,668)PPS LLR Jade: Earned 10,000,000 credits (18,136,278)PSP LLR Jade: Earned 10,000,000 credits (12,783,817)SoB LLR Jade: Earned 10,000,000 credits (13,332,361)SR5 LLR Turquoise: Earned 5,000,000 credits (5,248,659)SGS LLR Turquoise: Earned 5,000,000 credits (6,878,856)TRP LLR Jade: Earned 10,000,000 credits (11,153,506)Woodall LLR Turquoise: Earned 5,000,000 credits (6,400,237)321 Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,000,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,000,977)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,843,367)PPS Sieve Emerald: Earned 50,000,000 credits (80,183,646)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,473,750)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,243,608)AP 26/27 Jade: Earned 10,000,000 credits (12,535,426)GFN Double Silver: Earned 200,000,000 credits (212,813,987)WW Double Silver: Earned 200,000,000 credits (329,780,000)PSA Turquoise: Earned 5,000,000 credits (5,042,125)
Message 140302 - Posted: 18 May 2020 | 13:24:41 UTC - in response to Message 140281.

Crunchi, I believe there's a grammar error there:
you meant that he/she won't get any primes, but you said that he'll "not find nothing", which mean he'll find something.
Grammar, grammar, grammar, ugh
For me, a Spanish learner, grammar is even more confusing.

I believe in this case they were using the double negative as an insight to how the project is. There is no special way to run it to get a prime and mentally arguing with your computer and the project (come on people we all do it to some degree), will give us nothing more than we already get. So, Crunchi put it in fairly accurate words, because it is not going to make a difference, either way.

____________
My lucky numbers are 121*2^4553899-1 and 3756801695685*2^666669±1

Message boards : Number crunching : Bad luck club

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