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Message boards : News : ESP Mega Prime!

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Scott BrownProject donor
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Joined: 17 Oct 05
Posts: 2380
ID: 1178
Credit: 17,929,053,988
RAC: 10,800,378
Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 77 mega primesEliminated 7 conjecture "k"sDiscovered 1 Sophie Germain pairDiscovered 2 Fermat divisors2012 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 Stage2019 Tour de Primes highest prime countFound 22 primes in the 2019 Tour de Primes2020 Tour de Primes highest prime scoreFound 21 primes in the 2020 Tour de PrimesFound 4 mega primes in the 2020 Tour de PrimesFound 8 primes in the 2021 Tour de PrimesFound 1 mega prime in the 2021 Tour de PrimesFound 21 primes in the 2022 Tour de PrimesFound 1 mega prime in the 2022 Tour de PrimesFound 2 primes in the 2022 Tour de Primes Mountain Stage2023 Tour de Primes highest prime count2023 Tour de Primes highest prime scoreFound 100 primes in the 2023 Tour de PrimesFound 1 mega prime in the 2023 Tour de PrimesFound 9 primes in the 2023 Tour de Primes Mountain Stage321 LLR Double Silver: Earned 200,000,000 credits (225,294,994)Cullen LLR Double Silver: Earned 200,000,000 credits (227,849,353)ESP LLR Double Silver: Earned 200,000,000 credits (222,086,383)Generalized Cullen/Woodall LLR Double Silver: Earned 200,000,000 credits (270,311,256)PPS LLR Double Amethyst: Earned 1,000,000,000 credits (1,169,615,393)PSP LLR Double Silver: Earned 200,000,000 credits (225,655,922)SoB LLR Double Silver: Earned 200,000,000 credits (207,028,068)SR5 LLR Double Silver: Earned 200,000,000 credits (245,832,645)SGS LLR Double Silver: Earned 200,000,000 credits (242,663,892)TPS LLR (retired) Silver: Earned 100,000 credits (235,439)TRP LLR Double Silver: Earned 200,000,000 credits (286,900,365)Woodall LLR Double Silver: Earned 200,000,000 credits (229,259,795)321 Sieve (suspended) Double Silver: Earned 200,000,000 credits (235,451,253)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,794,448)Generalized Cullen/Woodall Sieve (suspended) Double Silver: Earned 200,000,000 credits (285,139,652)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (3,392,691,017)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 Gold: Earned 500,000,000 credits (681,551,260)GFN Double Ruby: Earned 2,000,000,000 credits (3,008,073,720)WW Double Turquoise: Earned 5,000,000,000 credits (6,025,724,000)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 152662 - Posted: 14 Dec 2021 | 18:24:54 UTC

On 25 November 2021, 03:19:26 UTC, PrimeGrid's Extended Sierpinski Problem found the Mega Prime:

202705*2^21320516+1

The prime is 6,418,121 digits long and will enter Chris Caldwell's The Largest Known Primes Database ranked 13th overall. This find eliminates k=202705; 8 k's remain in the Extended Sierpinski Problem.

The discovery was made by Pavel Atnashev (Pavel Atnashev) of Russia using an Intel(R) Xeon(R) E5-2695 v2 CPU @ 2.40GHz with 16GB RAM running Tiny Core Linux. This computer took about 10 hours, 59 minutes to complete the primality test using LLR2. Pavel is a member of the Ural Federal University team.

For more details, please see the official announcement.

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Message boards : News : ESP Mega Prime!

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