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Message boards : News : New SR5 Mega Prime!

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Profile Michael GoetzProject donor
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Joined: 21 Jan 10
Posts: 12695
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Credit: 184,975,805
RAC: 184,560
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 (2,063,182)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (4,202,866)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Ruby: Earned 2,000,000 credits (2,773,744)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (34,158,496)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,012,222)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 (5,046,112)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve 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 Turquoise: Earned 5,000,000 credits (7,090,096)GFN Emerald: Earned 50,000,000 credits (64,594,991)PSA Jade: Earned 10,000,000 credits (10,597,947)
Message 130746 - Posted: 28 Jun 2019 | 19:55:53 UTC

On 21 June 2019, 01:30:42 UTC, PrimeGrid’s Sierpiński/Riesel Base 5 Problem project eliminated k=88444 by finding the mega prime:

88444*5^2799269-1

The prime is 1,956,611 digits long and enters Chris Caldwell's “The Largest Known Primes Database” ranked 63rd overall and is the largest known base 5 prime. 68 k’s now remain in the Riesel Base 5 problem.

The discovery was made by Scott Brown of the United States using an Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz with 32GB RAM running Microsoft Windows 10 Professional x64 Edition. This computer took 5 hours and 29 minutes to complete the primality test using multithreaded LLR. Scott is a member of the Aggie The Pew team.

The prime was verified on 21 June 2019, 14:50:01 UTC by Dave Sunderland (DaveSun) using an Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz with 16GB RAM running Microsoft Windows 10 Core x64 Edition. This computer took about 12 hours and 32 minutes to complete the primality test using multithreaded LLR.

For more details, please see the official announcement.

Profile Eudy SilvaProject donor
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Credit: 131,105,443
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Found 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Gold: Earned 500,000 credits (834,329)Cullen LLR Amethyst: Earned 1,000,000 credits (1,011,118)ESP LLR Amethyst: Earned 1,000,000 credits (1,022,307)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,004,746)PPS LLR Turquoise: Earned 5,000,000 credits (6,141,134)PSP LLR Gold: Earned 500,000 credits (742,121)SoB LLR Ruby: Earned 2,000,000 credits (2,113,239)SR5 LLR Ruby: Earned 2,000,000 credits (2,427,369)SGS LLR Amethyst: Earned 1,000,000 credits (1,162,202)TRP LLR Amethyst: Earned 1,000,000 credits (1,309,179)Woodall LLR Amethyst: Earned 1,000,000 credits (1,001,901)321 Sieve Amethyst: Earned 1,000,000 credits (1,036,805)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,005,331)PPS Sieve Emerald: Earned 50,000,000 credits (63,539,979)AP 26/27 Sapphire: Earned 20,000,000 credits (21,282,352)GFN Sapphire: Earned 20,000,000 credits (25,471,331)
Message 130749 - Posted: 28 Jun 2019 | 20:18:18 UTC - in response to Message 130746.
Last modified: 28 Jun 2019 | 20:18:31 UTC

Congratulations to the finder and to the DC !
____________
"Accidit in puncto, quod non contingit in anno."
Something that does not occur in a year may, perchance, happen in a moment.

DaveSunProject donor
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Joined: 5 Sep 07
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ID: 11850
Credit: 779,313,591
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Found 1 prime in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,598,492)Cullen LLR Turquoise: Earned 5,000,000 credits (5,508,653)ESP LLR Turquoise: Earned 5,000,000 credits (5,445,940)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,379,940)PPS LLR Turquoise: Earned 5,000,000 credits (6,937,113)PSP LLR Turquoise: Earned 5,000,000 credits (5,059,621)SoB LLR Turquoise: Earned 5,000,000 credits (6,554,504)SR5 LLR Turquoise: Earned 5,000,000 credits (8,217,257)SGS LLR Ruby: Earned 2,000,000 credits (4,474,205)TPS LLR (retired) Bronze: Earned 10,000 credits (21,185)TRP LLR Turquoise: Earned 5,000,000 credits (5,684,556)Woodall LLR Turquoise: Earned 5,000,000 credits (5,486,471)321 Sieve Turquoise: Earned 5,000,000 credits (6,981,271)Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,528,158)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,003,771)PPS Sieve Double Gold: Earned 500,000,000 credits (612,804,431)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,015,377)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,038,856)AP 26/27 Turquoise: Earned 5,000,000 credits (5,318,198)GFN Emerald: Earned 50,000,000 credits (57,081,934)PSA Jade: Earned 10,000,000 credits (11,190,400)
Message 130756 - Posted: 29 Jun 2019 | 1:46:57 UTC

GRRR

2 SR5s and DC on both. I guess it isn't bad for old hardware.

Profile Rick Reynolds
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Joined: 13 Aug 10
Posts: 7062
ID: 65483
Credit: 3,958,630,759
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Discovered 1 mega primeFound 2 primes in the 2018 Tour de PrimesFound 2 primes in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,148,880)Cullen LLR Ruby: Earned 2,000,000 credits (2,773,730)ESP LLR Ruby: Earned 2,000,000 credits (4,913,807)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (3,356,142)PPS LLR Jade: Earned 10,000,000 credits (14,148,757)PSP LLR Ruby: Earned 2,000,000 credits (2,084,850)SoB LLR Turquoise: Earned 5,000,000 credits (5,014,268)SR5 LLR Jade: Earned 10,000,000 credits (11,169,992)SGS LLR Turquoise: Earned 5,000,000 credits (6,132,465)TRP LLR Turquoise: Earned 5,000,000 credits (6,568,836)Woodall LLR Ruby: Earned 2,000,000 credits (3,612,313)321 Sieve Sapphire: Earned 20,000,000 credits (45,593,485)Cullen/Woodall Sieve (suspended) Double Bronze: Earned 100,000,000 credits (127,922,665)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (30,984,158)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,046,555,461)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,134,964)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,013,696)AP 26/27 Double Bronze: Earned 100,000,000 credits (107,790,423)GFN Double Bronze: Earned 100,000,000 credits (152,016,870)PSA Double Amethyst: Earned 1,000,000,000 credits (1,370,700,486)
Message 130815 - Posted: 1 Jul 2019 | 13:53:00 UTC

Congrats on this really nice find !

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Message boards : News : New SR5 Mega Prime!

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