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Message boards : Sophie Germain Prime Search : TWIN PRIME FOUND!

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Profile Michael GoetzProject donor
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Joined: 21 Jan 10
Posts: 13045
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RAC: 92,598
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 Primes321 LLR Ruby: Earned 2,000,000 credits (2,822,730)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Turquoise: Earned 5,000,000 credits (5,009,577)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Turquoise: Earned 5,000,000 credits (9,089,262)PSP LLR Turquoise: Earned 5,000,000 credits (5,065,592)SoB LLR Sapphire: Earned 20,000,000 credits (34,221,148)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,014,138)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (5,536,459)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 (20,110,788)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 (10,114,260)GFN Emerald: Earned 50,000,000 credits (66,792,810)PSA Jade: Earned 10,000,000 credits (12,404,447)
Message 98882 - Posted: 15 Sep 2016 | 3:51:20 UTC
Last modified: 20 Sep 2016 | 13:12:40 UTC

tng* has found the world record twin primes:

2996863034895*2^1290000-1
2996863034895*2^1290000+1

These primes are 388,342 digits long. The previous record twin primes, also found by PrimeGrid in 2011, have 200,700 digits.

EDIT: Official announcement: http://www.primegrid.com/download/twin-1290000.pdf
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!

My lucky number is 75898524288+1

Profile ConanProject donor
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Joined: 24 Mar 09
Posts: 219
ID: 37336
Credit: 53,161,207
RAC: 6,227
321 LLR Gold: Earned 500,000 credits (500,863)Cullen LLR Gold: Earned 500,000 credits (522,970)ESP LLR Gold: Earned 500,000 credits (516,922)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (543,312)PPS LLR Gold: Earned 500,000 credits (669,312)PSP LLR Amethyst: Earned 1,000,000 credits (1,019,589)SoB LLR Amethyst: Earned 1,000,000 credits (1,055,482)SR5 LLR Gold: Earned 500,000 credits (522,539)SGS LLR Gold: Earned 500,000 credits (532,524)TRP LLR Gold: Earned 500,000 credits (564,910)Woodall LLR Amethyst: Earned 1,000,000 credits (1,022,336)321 Sieve Gold: Earned 500,000 credits (560,194)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (204,463)Generalized Cullen/Woodall Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,015,683)PPS Sieve Sapphire: Earned 20,000,000 credits (37,926,771)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,226,498)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,515,247)AP 26/27 Gold: Earned 500,000 credits (509,418)GFN Ruby: Earned 2,000,000 credits (2,506,619)PSA Silver: Earned 100,000 credits (225,555)
Message 98883 - Posted: 15 Sep 2016 | 4:55:03 UTC
Last modified: 15 Sep 2016 | 4:58:48 UTC

Congratulations tng, very few people can claim world records of any type.

Conan
____________


Michael Millerick
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Joined: 4 Feb 09
Posts: 674
ID: 35074
Credit: 139,897,751
RAC: 183,148
321 LLR Amethyst: Earned 1,000,000 credits (1,063,954)Cullen LLR Amethyst: Earned 1,000,000 credits (1,041,705)ESP LLR Ruby: Earned 2,000,000 credits (4,122,132)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,024,258)PPS LLR Turquoise: Earned 5,000,000 credits (6,749,920)PSP LLR Ruby: Earned 2,000,000 credits (2,012,651)SoB LLR Amethyst: Earned 1,000,000 credits (1,064,898)SR5 LLR Amethyst: Earned 1,000,000 credits (1,043,015)SGS LLR Amethyst: Earned 1,000,000 credits (1,119,360)TRP LLR Amethyst: Earned 1,000,000 credits (1,026,807)Woodall LLR Amethyst: Earned 1,000,000 credits (1,042,977)321 Sieve Ruby: Earned 2,000,000 credits (2,096,785)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,911,344)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,077,092)PPS Sieve Sapphire: Earned 20,000,000 credits (45,656,762)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,034,014)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,070,774)AP 26/27 Turquoise: Earned 5,000,000 credits (5,034,353)GFN Turquoise: Earned 5,000,000 credits (6,394,241)PSA Sapphire: Earned 20,000,000 credits (49,311,531)
Message 98885 - Posted: 15 Sep 2016 | 5:18:39 UTC

Excellent news for PrimeGrid (and tng*)! Let's hope a Sophie Germain Prime is around the corner.
____________

Iain BethuneProject donor
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Joined: 28 Jan 09
Posts: 1588
ID: 34775
Credit: 194,056,043
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321 LLR Gold: Earned 500,000 credits (597,175)Cullen LLR Amethyst: Earned 1,000,000 credits (1,355,381)ESP LLR Turquoise: Earned 5,000,000 credits (5,048,594)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,564,412)PPS LLR Amethyst: Earned 1,000,000 credits (1,025,115)PSP LLR Sapphire: Earned 20,000,000 credits (28,367,849)SoB LLR Jade: Earned 10,000,000 credits (16,215,329)SR5 LLR Turquoise: Earned 5,000,000 credits (5,189,992)SGS LLR Amethyst: Earned 1,000,000 credits (1,244,067)TRP LLR Turquoise: Earned 5,000,000 credits (5,169,405)Woodall LLR Amethyst: Earned 1,000,000 credits (1,070,956)321 Sieve Bronze: Earned 10,000 credits (20,003)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (200,371)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (11,645,025)PPS Sieve Turquoise: Earned 5,000,000 credits (7,536,532)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,017,144)TRP Sieve (suspended) Gold: Earned 500,000 credits (554,946)AP 26/27 Ruby: Earned 2,000,000 credits (3,577,848)GFN Emerald: Earned 50,000,000 credits (97,047,976)PSA Ruby: Earned 2,000,000 credits (4,606,694)
Message 98887 - Posted: 15 Sep 2016 | 7:48:36 UTC

This is great news! Congrats to tng* for being the lucky one, but thanks also to everyone else who has kept crunching away at these since the last twin found in December 2011.

This find nearly doubles the previous record for digit length (388342 vs 200700). Now time to find that Sophie :)

- Iain
____________
Twitter: IainBethune
Proud member of team "Aggie The Pew". Go Aggie!
3073428256125*2^1290000-1 is Prime!

Profile Michael GoetzProject donor
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Joined: 21 Jan 10
Posts: 13045
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Credit: 202,872,446
RAC: 92,598
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 Primes321 LLR Ruby: Earned 2,000,000 credits (2,822,730)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Turquoise: Earned 5,000,000 credits (5,009,577)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Turquoise: Earned 5,000,000 credits (9,089,262)PSP LLR Turquoise: Earned 5,000,000 credits (5,065,592)SoB LLR Sapphire: Earned 20,000,000 credits (34,221,148)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,014,138)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (5,536,459)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 (20,110,788)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 (10,114,260)GFN Emerald: Earned 50,000,000 credits (66,792,810)PSA Jade: Earned 10,000,000 credits (12,404,447)
Message 98892 - Posted: 15 Sep 2016 | 10:43:50 UTC - in response to Message 98887.

This is great news! Congrats to tng* for being the lucky one, but thanks also to everyone else who has kept crunching away at these since the last twin found in December 2011.

This find nearly doubles the previous record for digit length (388342 vs 200700). Now time to find that Sophie :)

- Iain


Should be "another".

Scott found the first Sophie in this range in February. :)

http://www.primegrid.com/download/SGS_2618163402417_1290000.pdf

In case anyone's wondering, yes, we keep searching for more twin primes and Sophie Germain pairs.
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!

My lucky number is 75898524288+1

Profile Pooh Bear 27Project donor
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Joined: 10 May 09
Posts: 676
ID: 39821
Credit: 400,027,525
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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 (5,734,854)ESP LLR Turquoise: Earned 5,000,000 credits (5,421,149)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,576,209)PPS LLR Jade: Earned 10,000,000 credits (11,793,206)PSP LLR Turquoise: Earned 5,000,000 credits (9,352,326)SoB LLR Turquoise: Earned 5,000,000 credits (8,986,628)SR5 LLR Turquoise: Earned 5,000,000 credits (5,248,659)SGS LLR Turquoise: Earned 5,000,000 credits (6,878,856)TRP LLR Turquoise: Earned 5,000,000 credits (5,416,106)Woodall LLR Turquoise: Earned 5,000,000 credits (6,400,237)321 Sieve 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 (78,673,438)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 (11,734,912)GFN Double Silver: Earned 200,000,000 credits (202,192,765)PSA Turquoise: Earned 5,000,000 credits (5,042,125)
Message 98893 - Posted: 15 Sep 2016 | 10:45:09 UTC

I knew my record would have been broken soon, and now here is the news.

Congrats tng* on the find.

Anthony Ayiomamitis
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Credit: 652,068,535
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Found 2 primes in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,035,398)Cullen LLR Ruby: Earned 2,000,000 credits (2,047,548)ESP LLR Ruby: Earned 2,000,000 credits (2,033,639)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,014,465)PPS LLR Ruby: Earned 2,000,000 credits (4,518,308)PSP LLR Ruby: Earned 2,000,000 credits (2,107,810)SoB LLR Ruby: Earned 2,000,000 credits (3,832,186)SR5 LLR Ruby: Earned 2,000,000 credits (2,023,400)SGS LLR Ruby: Earned 2,000,000 credits (2,029,683)TRP LLR Ruby: Earned 2,000,000 credits (2,045,113)Woodall LLR Ruby: Earned 2,000,000 credits (2,097,219)321 Sieve Emerald: Earned 50,000,000 credits (85,973,659)Generalized Cullen/Woodall Sieve (suspended) Double Bronze: Earned 100,000,000 credits (100,500,349)PPS Sieve Double Silver: Earned 200,000,000 credits (243,349,119)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (14,516,062)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,329,228)AP 26/27 Sapphire: Earned 20,000,000 credits (20,303,946)GFN Sapphire: Earned 20,000,000 credits (23,785,191)PSA Double Bronze: Earned 100,000,000 credits (116,531,700)
Message 98896 - Posted: 15 Sep 2016 | 10:54:54 UTC - in response to Message 98893.

Congrats from me as well!

Profile bill1024
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Joined: 9 Jan 14
Posts: 73
ID: 292175
Credit: 349,792,111
RAC: 50,432
Discovered 2 mega primesFound 1 prime in the 2018 Tour de PrimesFound 3 primes in the 2019 Tour de PrimesFound 1 prime in the 2019 Tour de Primes Mountain Stage321 LLR Jade: Earned 10,000,000 credits (11,222,253)Cullen LLR Turquoise: Earned 5,000,000 credits (7,492,762)ESP LLR Turquoise: Earned 5,000,000 credits (5,254,292)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (4,801,316)PPS LLR Sapphire: Earned 20,000,000 credits (33,301,065)PSP LLR Jade: Earned 10,000,000 credits (12,760,840)SoB LLR Sapphire: Earned 20,000,000 credits (21,142,107)SR5 LLR Jade: Earned 10,000,000 credits (10,509,046)SGS LLR Turquoise: Earned 5,000,000 credits (5,880,738)TRP LLR Turquoise: Earned 5,000,000 credits (9,887,485)Woodall LLR Turquoise: Earned 5,000,000 credits (5,086,775)321 Sieve Gold: Earned 500,000 credits (908,729)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (15,418,310)PPS Sieve Double Bronze: Earned 100,000,000 credits (123,941,557)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,500,272)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (3,470,782)AP 26/27 Jade: Earned 10,000,000 credits (14,716,520)GFN Emerald: Earned 50,000,000 credits (62,422,058)PSA Bronze: Earned 10,000 credits (83,164)
Message 98923 - Posted: 17 Sep 2016 | 17:52:11 UTC - in response to Message 98896.

Congratulations tng*, nice find.

Profile Michael GoetzProject donor
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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 Primes321 LLR Ruby: Earned 2,000,000 credits (2,822,730)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Turquoise: Earned 5,000,000 credits (5,009,577)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Turquoise: Earned 5,000,000 credits (9,089,262)PSP LLR Turquoise: Earned 5,000,000 credits (5,065,592)SoB LLR Sapphire: Earned 20,000,000 credits (34,221,148)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,014,138)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (5,536,459)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 (20,110,788)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 (10,114,260)GFN Emerald: Earned 50,000,000 credits (66,792,810)PSA Jade: Earned 10,000,000 credits (12,404,447)
Message 98973 - Posted: 20 Sep 2016 | 13:11:55 UTC

The official announcement is here: http://www.primegrid.com/download/twin-1290000.pdf
____________
Please do not PM me with support questions. Ask on the forums instead. Thank you!

My lucky number is 75898524288+1

Profile Christian KeimerProject donor
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Joined: 3 Jan 16
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Credit: 5,652,443
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321 LLR Bronze: Earned 10,000 credits (30,972)Cullen LLR Bronze: Earned 10,000 credits (12,538)ESP LLR Silver: Earned 100,000 credits (119,152)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (10,428)PPS LLR Bronze: Earned 10,000 credits (54,293)PSP LLR Silver: Earned 100,000 credits (245,872)SoB LLR Silver: Earned 100,000 credits (198,408)SR5 LLR Bronze: Earned 10,000 credits (52,102)SGS LLR Bronze: Earned 10,000 credits (12,653)TRP LLR Bronze: Earned 10,000 credits (83,940)Woodall LLR Bronze: Earned 10,000 credits (12,840)321 Sieve Bronze: Earned 10,000 credits (10,978)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (10,924)PPS Sieve Silver: Earned 100,000 credits (114,614)TRP Sieve (suspended) Bronze: Earned 10,000 credits (11,413)AP 26/27 Silver: Earned 100,000 credits (173,849)GFN Ruby: Earned 2,000,000 credits (4,496,556)
Message 99004 - Posted: 21 Sep 2016 | 14:49:24 UTC

Congratulations and cheers,

Chris

____________
My lucky number is 23077164^65536+1

Iain BethuneProject donor
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Joined: 28 Jan 09
Posts: 1588
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Credit: 194,056,043
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321 LLR Gold: Earned 500,000 credits (597,175)Cullen LLR Amethyst: Earned 1,000,000 credits (1,355,381)ESP LLR Turquoise: Earned 5,000,000 credits (5,048,594)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,564,412)PPS LLR Amethyst: Earned 1,000,000 credits (1,025,115)PSP LLR Sapphire: Earned 20,000,000 credits (28,367,849)SoB LLR Jade: Earned 10,000,000 credits (16,215,329)SR5 LLR Turquoise: Earned 5,000,000 credits (5,189,992)SGS LLR Amethyst: Earned 1,000,000 credits (1,244,067)TRP LLR Turquoise: Earned 5,000,000 credits (5,169,405)Woodall LLR Amethyst: Earned 1,000,000 credits (1,070,956)321 Sieve Bronze: Earned 10,000 credits (20,003)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (200,371)Generalized Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (11,645,025)PPS Sieve Turquoise: Earned 5,000,000 credits (7,536,532)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,017,144)TRP Sieve (suspended) Gold: Earned 500,000 credits (554,946)AP 26/27 Ruby: Earned 2,000,000 credits (3,577,848)GFN Emerald: Earned 50,000,000 credits (97,047,976)PSA Ruby: Earned 2,000,000 credits (4,606,694)
Message 99247 - Posted: 29 Sep 2016 | 9:58:06 UTC

I wrote a little blog post about this, which among other things, contains links to the full, unedited versions of the two primes (68 pages each):

http://www.epcc.ed.ac.uk/~ibethune/files/twin1290000plus.pdf
http://www.epcc.ed.ac.uk/~ibethune/files/twin1290000minus.pdf

Cheers

- Iain
____________
Twitter: IainBethune
Proud member of team "Aggie The Pew". Go Aggie!
3073428256125*2^1290000-1 is Prime!

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Joined: 25 Nov 09
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Credit: 52,738,925
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Eliminated 1 conjecture "k"Found 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Silver: Earned 100,000 credits (229,492)Cullen LLR Silver: Earned 100,000 credits (110,733)PPS LLR Ruby: Earned 2,000,000 credits (3,073,989)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 (1,073,792)TRP LLR Silver: Earned 100,000 credits (122,712)Woodall LLR Silver: Earned 100,000 credits (122,944)321 Sieve 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 (11,363,809)TRP Sieve (suspended) Silver: Earned 100,000 credits (255,612)AP 26/27 Ruby: Earned 2,000,000 credits (2,579,917)GFN Sapphire: Earned 20,000,000 credits (23,312,456)PSA Turquoise: Earned 5,000,000 credits (7,522,050)
Message 99250 - Posted: 29 Sep 2016 | 10:31:56 UTC - in response to Message 99247.

How is chosen N in this project?
I look backward and N was 666666 then 666667and 666670 and now is 1290000.
Next will be......?
____________
314187728^131072+1 GENERALIZED FERMAT :)
93*10^1029523-1 REPDIGIT PRIME
31*332^367560+1 CRUS PRIME
Proud member of team Aggie The Pew. Go Aggie!

Profile Michael GoetzProject donor
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Credit: 202,872,446
RAC: 92,598
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 Primes321 LLR Ruby: Earned 2,000,000 credits (2,822,730)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Turquoise: Earned 5,000,000 credits (5,009,577)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Turquoise: Earned 5,000,000 credits (9,089,262)PSP LLR Turquoise: Earned 5,000,000 credits (5,065,592)SoB LLR Sapphire: Earned 20,000,000 credits (34,221,148)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,014,138)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (5,536,459)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 (20,110,788)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 (10,114,260)GFN Emerald: Earned 50,000,000 credits (66,792,810)PSA Jade: Earned 10,000,000 credits (12,404,447)
Message 99251 - Posted: 29 Sep 2016 | 10:40:23 UTC - in response to Message 99250.

How is chosen N in this project?
I look backward and N was 666666 then 666667and 666670 and now is 1290000.
Next will be......?


This is the thread where Lennart was deciding which 'n' to use: http://www.primegrid.com/forum_thread.php?id=4284

The choice of 'n' was based on being large enough to be relatively high on the Top 5000 Primes list while being still small enough so that primes can be found relatively quickly. Which FFT size would be used on different CPU types was also a concern -- Lennart didn't want some CPUs to switch to larger FFT sizes, which would slow down the calculations.

As for which 'n' comes next, we don't know. That decision won't be made until we're done with the current 'n'. At least for now we are going to keep searching the same range. There's lots more candidates to search in the sieve file, and every new Twin or Sophie will be a new world record, if only by a tiny margin.
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