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Message boards : News : New SR5 Mega Prime!

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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 (2,063,182)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,135,461)PPS LLR Ruby: Earned 2,000,000 credits (2,768,012)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (32,736,611)SR5 LLR Turquoise: Earned 5,000,000 credits (8,042,989)SGS LLR Ruby: Earned 2,000,000 credits (2,011,264)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Ruby: Earned 2,000,000 credits (2,176,414)321 Sieve Ruby: Earned 2,000,000 credits (3,443,944)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 (63,788,779)PSA Jade: Earned 10,000,000 credits (10,050,056)
Message 129042 - Posted: 28 Apr 2019 | 4:50:56 UTC

On 26 April 2019, 13:27:42 UTC, PrimeGrid’s Sierpiński/Riesel Base 5 Problem project eliminated k=138514 by finding the mega prime:

138514*5^2771922+1

The prime is 1,937,496 digits long and enters Chris Caldwell's “The Largest Known Primes Database” ranked 63rd overall and is the largest known base 5 prime. 31 k’s now remain in the Sierpiński Base 5 problem.

The discovery was made by Ken Ito (jpldcon4) of Japan using an Intel(R) Core(TM) i9-9820X CPU @ 3.30GHz with 32 GB of RAM, running Microsoft Windows 10 Professional x64 Edition. This computer took 2 hours and 46 minutes to complete the primality test using multithreaded LLR. Ken is a member of Team 2ch.

The prime was verified on 27 April 2019, 07:28:26 UTC by Dmitry Domanov (unconnected) of Russia using an Intel(R) Core(TM) i5-2310 CPU @ 2.90GHz with 3 GB of RAM, running Microsoft Windows XP Professional x86 Edition. This computer took about 23 hours and 24 minutes to complete the primality test using LLR. Dmitry is a member of the Russia team.

For more details, please see the official announcement.

Profile Eudy SilvaProject donor
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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 (514,786)Cullen LLR Gold: Earned 500,000 credits (544,599)ESP LLR Gold: Earned 500,000 credits (506,993)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,004,746)PPS LLR Turquoise: Earned 5,000,000 credits (5,551,480)PSP LLR Gold: Earned 500,000 credits (742,121)SoB LLR Ruby: Earned 2,000,000 credits (2,050,849)SR5 LLR Ruby: Earned 2,000,000 credits (2,098,410)SGS LLR Amethyst: Earned 1,000,000 credits (1,096,864)TRP LLR Amethyst: Earned 1,000,000 credits (1,014,760)Woodall LLR Gold: Earned 500,000 credits (889,598)321 Sieve Amethyst: Earned 1,000,000 credits (1,000,211)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,005,331)PPS Sieve Emerald: Earned 50,000,000 credits (58,537,415)AP 26/27 Sapphire: Earned 20,000,000 credits (21,031,686)GFN Sapphire: Earned 20,000,000 credits (24,814,652)
Message 129052 - Posted: 28 Apr 2019 | 17:27:40 UTC - in response to Message 129042.

Congratulations to the finder and also 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.

HonzaProject donor
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Discovered 5 mega primesEliminated 3 conjecture "k"sFound 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes largest primeFound 4 primes in the 2019 Tour de PrimesFound 1 mega prime in the 2019 Tour de PrimesFound 1 prime in the 2019 Tour de Primes Mountain Stage321 LLR Emerald: Earned 50,000,000 credits (50,556,284)Cullen LLR Sapphire: Earned 20,000,000 credits (32,615,958)ESP LLR Sapphire: Earned 20,000,000 credits (22,668,198)Generalized Cullen/Woodall LLR Emerald: Earned 50,000,000 credits (50,258,656)PPS LLR Emerald: Earned 50,000,000 credits (80,432,674)PSP LLR Sapphire: Earned 20,000,000 credits (23,462,639)SoB LLR Emerald: Earned 50,000,000 credits (67,803,840)SR5 LLR Emerald: Earned 50,000,000 credits (50,318,336)SGS LLR Sapphire: Earned 20,000,000 credits (22,598,830)TPS LLR (retired) Bronze: Earned 10,000 credits (43,033)TRP LLR Emerald: Earned 50,000,000 credits (51,404,601)Woodall LLR Sapphire: Earned 20,000,000 credits (24,573,411)321 Sieve Sapphire: Earned 20,000,000 credits (20,574,024)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,142,109)Generalized Cullen/Woodall Sieve Emerald: Earned 50,000,000 credits (50,504,945)PPS Sieve Double Gold: Earned 500,000,000 credits (504,377,255)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,288,222)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,149,354)AP 26/27 Double Bronze: Earned 100,000,000 credits (150,445,680)GFN Double Gold: Earned 500,000,000 credits (614,303,774)PSA Double Gold: Earned 500,000,000 credits (531,181,306)
Message 129053 - Posted: 28 Apr 2019 | 17:38:14 UTC

Congrats!

This is first SR5 prime in 2019; we had 4 in 2018 and 2 in 2017.
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Message boards : News : New SR5 Mega Prime!

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