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Message boards : News : Another New SR5 Prime Found!

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Scott BrownProject donor
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Joined: 17 Oct 05
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Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 12 mega primesEliminated 6 conjecture "k"sDiscovered 1 Sophie Germain pairDiscovered 1 Fermat divisor2012 Tour de Primes highest prime count2012 Tour de Primes most Mountain Stage primes2015 Tour de Primes highest prime count2016 Tour de Primes highest prime countFound 23 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 2 primes in the 2018 Tour de Primes Mountain Stage321 LLR Double Bronze: Earned 100,000,000 credits (100,829,118)Cullen LLR Double Bronze: Earned 100,000,000 credits (103,736,560)ESP LLR Double Bronze: Earned 100,000,000 credits (103,603,483)Generalized Cullen/Woodall LLR Double Bronze: Earned 100,000,000 credits (102,075,655)PPS LLR Double Silver: Earned 200,000,000 credits (303,052,366)PSP LLR Emerald: Earned 50,000,000 credits (80,100,999)SoB LLR Double Bronze: Earned 100,000,000 credits (116,841,417)SR5 LLR Double Bronze: Earned 100,000,000 credits (129,119,705)SGS LLR Double Bronze: Earned 100,000,000 credits (143,876,598)TPS LLR (retired) Silver: Earned 100,000 credits (235,439)TRP LLR Double Bronze: Earned 100,000,000 credits (109,149,031)Woodall LLR Double Bronze: Earned 100,000,000 credits (100,831,299)321 Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,322,150)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,794,448)Generalized Cullen/Woodall Sieve Double Silver: Earned 200,000,000 credits (234,593,099)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,105,665,691)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Double Silver: Earned 200,000,000 credits (203,523,358)TRP Sieve (suspended) Double Silver: Earned 200,000,000 credits (201,489,157)AP 26/27 Double Bronze: Earned 100,000,000 credits (108,751,149)GFN Double Gold: Earned 500,000,000 credits (875,842,785)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 78106 - Posted: 15 Jul 2014 | 22:10:05 UTC

On 27 June 2014, 20:20:40 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=138172 by finding the mega prime:

138172*5^1714207-1

The prime is 1,198,185 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 54th overall. This is the largest known base 5 mega prime. 80 k's now remain in the Riesel Base 5 Problem.

The discovery was made by Walter Darimont (Walter Darimont) of Belgium using an Intel Core i7-3770 CPU @ 3.40GHz with 3.8GB RAM running Linux. This computer took about 18 hours and 25 minutes to complete the primality test using LLR. Walter is a member of the Aggie The Pew team.

The prime was verified on 28 June 2014 13:08:49 UTC, by Scott Brown (Scott Brown) of the United States using an Intel Core2 CPU 6600 @ 2.40GHz with 4 GB RAM running Microsoft Windows 7 Enterprise. This computer took about 38 hours and 32 minutes to complete the primality test using LLR. Scott is a member of the Duke University team.

For more details, please see the official announcement.

Profile Gary Craig
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Discovered 1 mega prime321 LLR Ruby: Earned 2,000,000 credits (2,614,439)Cullen LLR Ruby: Earned 2,000,000 credits (2,440,687)ESP LLR Turquoise: Earned 5,000,000 credits (5,019,435)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,029,174)PPS LLR Turquoise: Earned 5,000,000 credits (5,779,106)PSP LLR Turquoise: Earned 5,000,000 credits (5,000,433)SoB LLR Ruby: Earned 2,000,000 credits (3,841,375)SR5 LLR Turquoise: Earned 5,000,000 credits (5,040,727)SGS LLR Ruby: Earned 2,000,000 credits (3,142,971)TRP LLR Jade: Earned 10,000,000 credits (11,717,810)Woodall LLR Ruby: Earned 2,000,000 credits (2,282,622)321 Sieve (suspended) Silver: Earned 100,000 credits (200,818)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (59,788,598)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,056,778)PPS Sieve Double Silver: Earned 200,000,000 credits (450,191,693)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,130,821)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,074,710)AP 26/27 Silver: Earned 100,000 credits (227,004)GFN Double Bronze: Earned 100,000,000 credits (106,896,662)PSA Emerald: Earned 50,000,000 credits (62,378,755)
Message 78109 - Posted: 16 Jul 2014 | 0:31:37 UTC
Last modified: 16 Jul 2014 | 0:34:34 UTC

It looks like Mr. Dupont has *more* happy updates to make to his mega-spreadsheet... let's keep that up for the foreseeable future :-)

CongRATs Walter!

--Gary

Scott BrownProject donor
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Joined: 17 Oct 05
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Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 12 mega primesEliminated 6 conjecture "k"sDiscovered 1 Sophie Germain pairDiscovered 1 Fermat divisor2012 Tour de Primes highest prime count2012 Tour de Primes most Mountain Stage primes2015 Tour de Primes highest prime count2016 Tour de Primes highest prime countFound 23 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 2 primes in the 2018 Tour de Primes Mountain Stage321 LLR Double Bronze: Earned 100,000,000 credits (100,829,118)Cullen LLR Double Bronze: Earned 100,000,000 credits (103,736,560)ESP LLR Double Bronze: Earned 100,000,000 credits (103,603,483)Generalized Cullen/Woodall LLR Double Bronze: Earned 100,000,000 credits (102,075,655)PPS LLR Double Silver: Earned 200,000,000 credits (303,052,366)PSP LLR Emerald: Earned 50,000,000 credits (80,100,999)SoB LLR Double Bronze: Earned 100,000,000 credits (116,841,417)SR5 LLR Double Bronze: Earned 100,000,000 credits (129,119,705)SGS LLR Double Bronze: Earned 100,000,000 credits (143,876,598)TPS LLR (retired) Silver: Earned 100,000 credits (235,439)TRP LLR Double Bronze: Earned 100,000,000 credits (109,149,031)Woodall LLR Double Bronze: Earned 100,000,000 credits (100,831,299)321 Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,322,150)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,794,448)Generalized Cullen/Woodall Sieve Double Silver: Earned 200,000,000 credits (234,593,099)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,105,665,691)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Double Silver: Earned 200,000,000 credits (203,523,358)TRP Sieve (suspended) Double Silver: Earned 200,000,000 credits (201,489,157)AP 26/27 Double Bronze: Earned 100,000,000 credits (108,751,149)GFN Double Gold: Earned 500,000,000 credits (875,842,785)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 78112 - Posted: 16 Jul 2014 | 2:32:06 UTC


FYI...This is our 11th SR5 mega-prime, the 9th SR5 mega-prime found this year, and our 15th mega-prime of 2014 (which is a new record).

Profile ThomasProject donor
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Cullen LLR Bronze: Earned 10,000 credits (14,602)ESP LLR Bronze: Earned 10,000 credits (10,158)PPS LLR Bronze: Earned 10,000 credits (18,124)PSP LLR Bronze: Earned 10,000 credits (21,049)SoB LLR Bronze: Earned 10,000 credits (98,339)SR5 LLR Bronze: Earned 10,000 credits (12,188)SGS LLR Bronze: Earned 10,000 credits (62,305)TRP LLR Bronze: Earned 10,000 credits (17,022)PPS Sieve Turquoise: Earned 5,000,000 credits (5,137,404)
Message 78126 - Posted: 17 Jul 2014 | 14:02:02 UTC - in response to Message 78109.

It looks like Mr. Dupont has *more* happy updates to make to his mega-spreadsheet... let's keep that up for the foreseeable future :-)

Done Gary ;)
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Message boards : News : Another New SR5 Prime Found!

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