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Message boards : General discussion : Question about finding large prime numbers via PrimeGrid GPUing

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SimonCruncher
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Joined: 4 Feb 18
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ID: 974406
Credit: 44,078,795
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PPS Sieve Amethyst: Earned 1,000,000 credits (1,065,236)AP 26/27 Gold: Earned 500,000 credits (622,622)GFN Sapphire: Earned 20,000,000 credits (42,390,937)
Message 118845 - Posted: 20 Jun 2018 | 3:42:28 UTC

Hi I have an AMD/ATI R9 390 and an NVIDIA 1070 for PrimeGrid. I see a bunch of checkboxes in the PrimeGrid preferences page. Which do I keep checked to only search for primes that might end up on the "largest 100 primes in the world" list? I know the chances of me finding a world record prime are slim, but that's what I'm interested in trying to do!

Simon

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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de PrimesFound 1 prime in the 2020 Tour de PrimesFound 2 primes in the 2021 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,132,712)Cullen LLR Turquoise: Earned 5,000,000 credits (5,038,114)ESP LLR Turquoise: Earned 5,000,000 credits (6,177,890)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,234,442)PPS LLR Sapphire: Earned 20,000,000 credits (20,751,038)PSP LLR Turquoise: Earned 5,000,000 credits (7,956,186)SoB LLR Sapphire: Earned 20,000,000 credits (36,067,618)SR5 LLR Jade: Earned 10,000,000 credits (10,007,110)SGS LLR Ruby: Earned 2,000,000 credits (3,718,606)TRP LLR Turquoise: Earned 5,000,000 credits (5,084,329)Woodall LLR Turquoise: Earned 5,000,000 credits (5,007,789)321 Sieve (suspended) Jade: Earned 10,000,000 credits (10,061,196)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (22,885,121)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Jade: Earned 10,000,000 credits (10,118,303)GFN Emerald: Earned 50,000,000 credits (78,031,938)WW Sapphire: Earned 20,000,000 credits (32,204,000)PSA Jade: Earned 10,000,000 credits (12,445,029)
Message 118846 - Posted: 20 Jun 2018 | 4:21:42 UTC - in response to Message 118845.
Last modified: 20 Jun 2018 | 4:23:26 UTC

Hi I have an AMD/ATI R9 390 and an NVIDIA 1070 for PrimeGrid. I see a bunch of checkboxes in the PrimeGrid preferences page. Which do I keep checked to only search for primes that might end up on the "largest 100 primes in the world" list? I know the chances of me finding a world record prime are slim, but that's what I'm interested in trying to do!

Simon


GFN 18
GFN 19
GFN 20
GFN 21
GFN 22

By far, GFN 18 is the most likely to yield a prime.

EDIT: For your CPU, your best bet is SR5 (Sierpinski/Riesel Base 5).
____________
My lucky number is 75898524288+1

dukebg
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Found 1 prime in the 2018 Tour de Primes321 LLR Gold: Earned 500,000 credits (506,942)Cullen LLR Gold: Earned 500,000 credits (500,523)ESP LLR Gold: Earned 500,000 credits (655,642)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (539,100)PPS LLR Gold: Earned 500,000 credits (688,232)PSP LLR Gold: Earned 500,000 credits (561,629)SoB LLR Ruby: Earned 2,000,000 credits (3,659,676)SR5 LLR Gold: Earned 500,000 credits (505,810)SGS LLR Gold: Earned 500,000 credits (506,024)TRP LLR Gold: Earned 500,000 credits (963,625)Woodall LLR Gold: Earned 500,000 credits (506,044)321 Sieve (suspended) Gold: Earned 500,000 credits (511,694)Generalized Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (549,916)PPS Sieve Gold: Earned 500,000 credits (701,168)AP 26/27 Gold: Earned 500,000 credits (525,590)GFN Jade: Earned 10,000,000 credits (10,762,872)WW Gold: Earned 500,000 credits (500,000)PSA Gold: Earned 500,000 credits (525,639)
Message 118852 - Posted: 20 Jun 2018 | 7:57:06 UTC - in response to Message 118845.

the chances of me finding a world record prime are slim

If you mean the definition of "world record" as "the biggest known prime in the world", then the chance is exactly zero.
If it's "the biggest known prime (of specific kind)" or "a big enough prime to be in the shortlist of top100 biggest known primes" then yes, there is that slim chance.

SimonCruncher
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PPS Sieve Amethyst: Earned 1,000,000 credits (1,065,236)AP 26/27 Gold: Earned 500,000 credits (622,622)GFN Sapphire: Earned 20,000,000 credits (42,390,937)
Message 118940 - Posted: 23 Jun 2018 | 3:04:54 UTC

Very helpful. Thank you.

Message boards : General discussion : Question about finding large prime numbers via PrimeGrid GPUing

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