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Message boards : News : Another PPS Mega Prime!

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Scott BrownProject donor
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Joined: 17 Oct 05
Posts: 1750
ID: 1178
Credit: 5,470,711,021
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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 (103,719,533)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 (129,032,046)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 (100,703,421)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 (234,450,029)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,105,662,320)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 (105,650,168)GFN Double Gold: Earned 500,000,000 credits (875,652,118)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 86380 - Posted: 24 Jun 2015 | 2:58:30 UTC
Last modified: 24 Jun 2015 | 16:31:12 UTC

On 10 May 2015, 02:13:21 UTC, PrimeGrid’s Mega Prime Search found the Mega Prime:

195*2^3486379+1

The prime is 1,049,507 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 109th overall.

The discovery was made by Naoki Yoshioka (oevrtaker@biomaterial) of Japan using an Intel(R) Xeon(R) CPU E5-2687W 0 @ 3.10GHz with 64GB RAM running Microsoft Windows 8.1 Enterprise. This computer took about 1 hour and 32 minutes to complete the primality test using LLR. Naoki is a member of the Doshisha University team.

The prime was verified on 10 May 2015, 10:12:42 UTC, by Scott Brown (Scott Brown) of the United States using an Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz with 8GB RAM, running Microsoft Windows 7 Enterprise. This computer took about 1 hour and 14 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.

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Message boards : News : Another PPS Mega Prime!

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