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Message boards : News : SR5 Mega Prime!

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Van ZimmermanProject donor
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Joined: 30 Aug 12
Posts: 1939
ID: 168418
Credit: 5,420,276,470
RAC: 5,854,205
Discovered the World's First GFN-20 prime!!!Discovered 2 mega primesFound 1 prime in the 2018 Tour de Primes321 LLR Sapphire: Earned 20,000,000 credits (20,089,185)Cullen LLR Sapphire: Earned 20,000,000 credits (21,197,588)ESP LLR Sapphire: Earned 20,000,000 credits (20,089,407)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (20,037,992)PPS LLR Sapphire: Earned 20,000,000 credits (21,128,432)PSP LLR Sapphire: Earned 20,000,000 credits (20,117,197)SoB LLR Sapphire: Earned 20,000,000 credits (21,208,789)SR5 LLR Sapphire: Earned 20,000,000 credits (20,278,667)SGS LLR Sapphire: Earned 20,000,000 credits (20,055,153)TRP LLR Sapphire: Earned 20,000,000 credits (20,619,871)Woodall LLR Sapphire: Earned 20,000,000 credits (20,376,227)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,371,066)PPS Sieve Double Amethyst: Earned 1,000,000,000 credits (1,051,222,753)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,189,695)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,102,079)AP 26/27 Emerald: Earned 50,000,000 credits (60,248,786)GFN Double Ruby: Earned 2,000,000,000 credits (3,847,656,524)PSA Double Bronze: Earned 100,000,000 credits (195,284,871)
Message 98069 - Posted: 25 Aug 2016 | 14:39:13 UTC

On 20 August 2016, 16:21:09 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=180062 by finding the mega prime:

180062*5^2249192-1

The prime is 1,572,123 digits long and will enter Chris Caldwell's The Largest Known Primes Database ranked 48th overall. This is the largest known base 5 mega prime. 74 k's now remain in the Riesel Base 5 Problem.

The discovery was made by Stefan Larsson (288larsson) of Sweden using an Intel(R) Core(TM) i7-5775C CPU @ 3.30GHz with 8GB RAM running Linux. This computer took about 14 hours 3 minutes to complete the primality test using LLR. Stefan is a member of the Sicituradastra. team.

For more details, please see the official announcement.

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Message boards : News : SR5 Mega Prime!

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