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Message boards : News : World Record 321 Mega Prime Found!

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Scott BrownProject donor
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Joined: 17 Oct 05
Posts: 1770
ID: 1178
Credit: 5,552,888,404
RAC: 3,165,502
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 (103,870,990)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 (89,861,104)SoB LLR Double Bronze: Earned 100,000,000 credits (116,841,417)SR5 LLR Double Bronze: Earned 100,000,000 credits (129,423,098)SGS LLR Double Bronze: Earned 100,000,000 credits (148,157,565)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 (101,374,592)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 (241,096,291)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,105,665,691)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 (119,533,830)GFN Double Gold: Earned 500,000,000 credits (922,065,310)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 72576 - Posted: 24 Jan 2014 | 4:08:03 UTC

On 14 January 2014, 15:26:41 UTC, PrimeGrid’s 321 Prime Search project found the mega prime:

3*2^10829346+1

The prime is 3,259,959 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 12th overall. This is the largest known 321 mega prime and the largest prime found to date at PrimeGrid!

The discovery was made by Sai Yik Tang (tomakey) of Malaysia using an Intel(R) Core(TM) i5-2400 CPU @ 3.10GHz with 4 GB RAM running Microsoft Windows 7 Enterprise. This computer took about 17 hours and 40 minutes to complete the primality test using LLR.

The prime was verified on 14 January 2014 20:23:24 UTC, by schnabelt of Germany using an Intel(R) Pentium(R) CPU G850 @ 2.90GHz with 4 GB RAM running Microsoft Windows 7 Enterprise. This computer took about 22 hours and 47 minutes to complete the primality test using LLR.

For more details, please see the official announcement.


Profile ThomasProject donor
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Joined: 5 Jan 14
Posts: 284
ID: 291161
Credit: 5,391,192
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Cullen LLR Bronze: Earned 10,000 credits (14,602)ESP LLR Bronze: Earned 10,000 credits (10,158)PPS LLR Bronze: Earned 10,000 credits (18,124)PSP LLR Bronze: Earned 10,000 credits (21,049)SoB LLR Bronze: Earned 10,000 credits (98,339)SR5 LLR Bronze: Earned 10,000 credits (12,188)SGS LLR Bronze: Earned 10,000 credits (62,305)TRP LLR Bronze: Earned 10,000 credits (17,022)PPS Sieve Turquoise: Earned 5,000,000 credits (5,137,404)
Message 72578 - Posted: 24 Jan 2014 | 6:57:09 UTC

Congratz for this new discovery, Sai Yik Tang ! :)
GG to schnabelt to have verified this discovery.
Thanks for the heads-up Scott.
Keep crunching !
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HonzaProject donor
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Joined: 15 Aug 05
Posts: 1752
ID: 352
Credit: 2,191,431,192
RAC: 1,842,455
Discovered 4 mega primesEliminated 3 conjecture "k"sFound 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2018 Tour de Primes Mountain Stage321 LLR Sapphire: Earned 20,000,000 credits (34,516,788)Cullen LLR Sapphire: Earned 20,000,000 credits (25,424,693)ESP LLR Sapphire: Earned 20,000,000 credits (22,668,198)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (21,044,302)PPS LLR Emerald: Earned 50,000,000 credits (67,163,078)PSP LLR Sapphire: Earned 20,000,000 credits (23,462,639)SoB LLR Emerald: Earned 50,000,000 credits (58,594,951)SR5 LLR Emerald: Earned 50,000,000 credits (50,308,578)SGS LLR Sapphire: Earned 20,000,000 credits (22,597,792)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 (suspended) Ruby: Earned 2,000,000 credits (4,024,795)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 Emerald: Earned 50,000,000 credits (69,237,982)GFN Double Gold: Earned 500,000,000 credits (585,786,617)PSA Double Gold: Earned 500,000,000 credits (531,105,040)
Message 72584 - Posted: 24 Jan 2014 | 9:36:24 UTC

Congrats!

Prime score is 44,421.339 (and 22,210.669 for doublechecker)

____________
My stats
Badge score: 1*1 + 5*2 + 8*9 + 9*6 + 12*3 = 173

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Message boards : News : World Record 321 Mega Prime Found!

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