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Message boards : News : SR5 Mega Prime!

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Scott BrownProject donor
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Joined: 17 Oct 05
Posts: 1769
ID: 1178
Credit: 5,531,796,388
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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 (103,870,990)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 (88,692,247)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 (148,139,604)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 (101,356,263)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 (240,468,300)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 (902,983,417)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 80247 - Posted: 12 Oct 2014 | 20:51:24 UTC

On 21 September 2014, 18:43:31 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=325918 by finding the mega prime:

325918*5^1803339-1

The prime is 1,260,486 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 58th overall. This is the largest known base 5 mega prime. 79 k's now remain in the Riesel Base 5 Problem.

The discovery was made by Jörg Meili (meilijo) of Switzerland using an Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz with 8GB RAM running Microsoft Windows 7 Home Premium. This computer took about 20 hours and 51 minutes to complete the primality test using LLR. Jörg is a member of the Aggie the Pew team.

The prime was verified on 1 October 2014, 12:57:59 UTC by Yegor Ryabchikov (Yegor001) of Russia using an Intel(R) Core(TM) i5 CPU 760 @ 2.80GHz with 2GB RAM running Microsoft Windows 7 Home Basic. This computer took about 133 hours 16 minutes to complete the primality test using LLR.

For more details, please see the official announcement.

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Joined: 5 Jan 14
Posts: 284
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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 80263 - Posted: 13 Oct 2014 | 14:43:31 UTC

Congrats Jörg ! :) And Yegor for the double check.
Thanks Scott for the heads-up.
____________

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Joined: 14 Aug 11
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Credit: 139,771,714
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Discovered 1 mega primeEliminated 3 conjecture "k"s321 LLR Gold: Earned 500,000 credits (822,057)Cullen LLR Silver: Earned 100,000 credits (112,202)ESP LLR Ruby: Earned 2,000,000 credits (3,469,385)PPS LLR Ruby: Earned 2,000,000 credits (2,947,695)PSP LLR Silver: Earned 100,000 credits (142,429)SoB LLR Silver: Earned 100,000 credits (124,970)SR5 LLR Ruby: Earned 2,000,000 credits (4,804,081)SGS LLR Ruby: Earned 2,000,000 credits (2,256,631)TRP LLR Silver: Earned 100,000 credits (284,130)Woodall LLR Silver: Earned 100,000 credits (181,209)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,000,539)PPS Sieve Emerald: Earned 50,000,000 credits (78,298,163)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (318,603)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,111,748)GFN Ruby: Earned 2,000,000 credits (2,286,989)PSA Sapphire: Earned 20,000,000 credits (38,610,885)
Message 80265 - Posted: 13 Oct 2014 | 17:16:53 UTC - in response to Message 80263.

Thanks! :-)
____________
ESP: Eliminated k=94373
SR5: Eliminated k=97366 and k=325918

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Message boards : News : SR5 Mega Prime!

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