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Message boards : News : World record SR5 prime discovered!

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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 Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)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 (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,559,433)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,957,155)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,845,873)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 (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 74878 - Posted: 24 Mar 2014 | 17:19:26 UTC

On 21 March 2014, 13:39:54 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=330286 by finding the mega prime:

330286*5^1584399-1

The prime is 1,107,453 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 57th overall. This is the largest known base 5 mega prime. 85 k's now remain in the Riesel Base 5 Problem.

The discovery was made by Scott Brown (Scott Brown) of the United States using an Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz with 4GB RAM running Microsoft Windows 7 Enterprise. This computer took about 35 hours and 55 minutes to complete the primality test using LLR. Scott is a member of the Duke University team.

The prime was verified on 23 March 2014 10:55:21 UTC, by Baneus of Germany using an AuthenticAMD Quad-Core AMD Opteron(tm) Processor 2356 with 64 GB RAM running Linux. This computer took about 73 hours and 11 minutes to complete the primality test using LLR.

For more details, please see the official announcement.

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Message boards : News : World record SR5 prime discovered!

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