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Message boards : News : 27 Mega Prime

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JohnProject donor
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321 LLR Bronze: Earned 10,000 credits (11,773)Cullen LLR Bronze: Earned 10,000 credits (14,945)ESP LLR Bronze: Earned 10,000 credits (26,855)PPS LLR Bronze: Earned 10,000 credits (84,876)PSP LLR Bronze: Earned 10,000 credits (15,311)SoB LLR Bronze: Earned 10,000 credits (21,440)SR5 LLR Bronze: Earned 10,000 credits (29,270)SGS LLR Bronze: Earned 10,000 credits (26,616)TPS LLR (retired) Bronze: Earned 10,000 credits (36,288)TRP LLR Bronze: Earned 10,000 credits (41,655)Woodall LLR Bronze: Earned 10,000 credits (15,807)321 Sieve (suspended) Bronze: Earned 10,000 credits (20,014)Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (23,405)PPS Sieve Bronze: Earned 10,000 credits (36,192)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (20,306)TRP Sieve (suspended) Bronze: Earned 10,000 credits (21,738)GFN Bronze: Earned 10,000 credits (86,217)PSA Ruby: Earned 2,000,000 credits (2,143,756)
Message 50778 - Posted: 28 Feb 2012 | 18:49:36 UTC
Last modified: 2 Mar 2012 | 21:34:41 UTC

On 28 Feb 2012, 15:51:22 UTC, PrimeGrid’s 27121 Prime Search, through PRPNet and in collaboration with the 12121 Search (k=27 sister project), has found the mega prime: 27*2^3855094-1

The prime is 1,160,501 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 34th overall. This is PrimeGrid's 23rd mega prime.

The discovery was made by Pietari Snow (Lumiukko) of Finland using an Intel Intel Xeon E5410 @ 2.33GHz with 12GB RAM, running Microsoft Windows Server 2003 64 bit. This computer took just over 4 hours 13 minutes to complete the primality test using LLR. Pietari is a member of the PrimeSearchTeam.

For more details, please see the official announcement.
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321 LLR Amethyst: Earned 1,000,000 credits (1,009,885)Cullen LLR Amethyst: Earned 1,000,000 credits (1,440,123)ESP LLR Amethyst: Earned 1,000,000 credits (1,008,511)PPS LLR Ruby: Earned 2,000,000 credits (2,389,215)PSP LLR Amethyst: Earned 1,000,000 credits (1,080,442)SoB LLR Amethyst: Earned 1,000,000 credits (1,143,918)SR5 LLR Amethyst: Earned 1,000,000 credits (1,853,162)SGS LLR Amethyst: Earned 1,000,000 credits (1,344,963)TRP LLR Amethyst: Earned 1,000,000 credits (1,140,037)Woodall LLR Amethyst: Earned 1,000,000 credits (1,130,355)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,038,617)PPS Sieve Sapphire: Earned 20,000,000 credits (36,643,348)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,000,717)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,298,244)GFN Jade: Earned 10,000,000 credits (17,332,530)PSA Sapphire: Earned 20,000,000 credits (20,125,451)
Message 50779 - Posted: 28 Feb 2012 | 18:52:35 UTC
Last modified: 28 Feb 2012 | 18:53:14 UTC

If it wouldn't have been a leap year, once again a mega prime on the last day! On the other hand, that does leave room for someone to come up with a new GFN prime tomorrow! ;)

And of course congratulations to Lumiukko!
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Eliminated 3 conjecture "k"s321 LLR Silver: Earned 100,000 credits (186,594)Cullen LLR Silver: Earned 100,000 credits (106,665)ESP LLR Gold: Earned 500,000 credits (502,416)PPS LLR Gold: Earned 500,000 credits (504,111)PSP LLR Gold: Earned 500,000 credits (513,785)SoB LLR Gold: Earned 500,000 credits (564,944)SR5 LLR Ruby: Earned 2,000,000 credits (2,790,118)SGS LLR Gold: Earned 500,000 credits (501,099)TPS LLR (retired) Bronze: Earned 10,000 credits (46,235)TRP LLR Gold: Earned 500,000 credits (708,706)Woodall LLR Silver: Earned 100,000 credits (133,626)321 Sieve (suspended) Bronze: Earned 10,000 credits (21,527)Cullen/Woodall Sieve (suspended) Jade: Earned 10,000,000 credits (14,729,132)PPS Sieve Double Bronze: Earned 100,000,000 credits (132,786,707)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Gold: Earned 500,000 credits (510,317)TRP Sieve (suspended) Gold: Earned 500,000 credits (620,991)AP 26/27 Silver: Earned 100,000 credits (418,876)GFN Amethyst: Earned 1,000,000 credits (1,795,613)PSA Jade: Earned 10,000,000 credits (18,329,123)
Message 50780 - Posted: 28 Feb 2012 | 18:55:39 UTC

Yes, this is an incredible month, congratz!

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Eliminated 2 conjecture "k"s321 LLR Ruby: Earned 2,000,000 credits (2,155,356)Cullen LLR Amethyst: Earned 1,000,000 credits (1,781,038)ESP LLR Amethyst: Earned 1,000,000 credits (1,256,881)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,013,254)PPS LLR Jade: Earned 10,000,000 credits (11,107,194)PSP LLR Ruby: Earned 2,000,000 credits (2,458,763)SoB LLR Amethyst: Earned 1,000,000 credits (1,403,067)SR5 LLR Jade: Earned 10,000,000 credits (12,022,512)SGS LLR Ruby: Earned 2,000,000 credits (4,494,829)TRP LLR Ruby: Earned 2,000,000 credits (2,770,348)Woodall LLR Amethyst: Earned 1,000,000 credits (1,239,233)321 Sieve (suspended) Bronze: Earned 10,000 credits (77,339)Cullen/Woodall Sieve (suspended) Sapphire: Earned 20,000,000 credits (27,076,246)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (3,607,166)PPS Sieve Double Silver: Earned 200,000,000 credits (229,227,858)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,054,368)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,010,272)AP 26/27 Emerald: Earned 50,000,000 credits (50,881,155)GFN Double Bronze: Earned 100,000,000 credits (103,821,053)PSA Jade: Earned 10,000,000 credits (19,116,570)
Message 50784 - Posted: 28 Feb 2012 | 19:10:06 UTC

Amazing! Two Megaprimes in such a shot period of time at 121 and 27. What a fortune. Congrats@Lumiukko!

Regards Odi
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Profile Michael GoetzProject donor
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,504,899)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (2,001,789)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,004,898)PPS LLR Ruby: Earned 2,000,000 credits (2,082,200)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (24,559,433)SR5 LLR Turquoise: Earned 5,000,000 credits (7,216,756)SGS LLR Ruby: Earned 2,000,000 credits (2,010,466)TRP LLR Ruby: Earned 2,000,000 credits (2,433,520)Woodall LLR Amethyst: Earned 1,000,000 credits (1,957,155)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,845,328)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (6,499,818)GFN Emerald: Earned 50,000,000 credits (52,696,314)PSA Jade: Earned 10,000,000 credits (10,038,118)
Message 50789 - Posted: 28 Feb 2012 | 19:37:03 UTC - in response to Message 50784.

Three mega primes in one month -- a short month -- is pretty spectacular, considering there's less than 50 that have ever been discovered.


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Discovered 1 mega prime2012 Tour de Primes highest prime scoreFound 2 primes in the 2018 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (13,495,745)Cullen LLR Ruby: Earned 2,000,000 credits (2,605,349)ESP LLR Ruby: Earned 2,000,000 credits (3,191,926)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,268,933)PPS LLR Turquoise: Earned 5,000,000 credits (7,944,790)PSP LLR Ruby: Earned 2,000,000 credits (2,061,297)SoB LLR Ruby: Earned 2,000,000 credits (2,796,799)SR5 LLR Ruby: Earned 2,000,000 credits (2,285,621)SGS LLR Ruby: Earned 2,000,000 credits (2,294,236)TRP LLR Amethyst: Earned 1,000,000 credits (1,590,965)Woodall LLR Amethyst: Earned 1,000,000 credits (1,258,942)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,449,019)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,388,253)PPS Sieve Double Silver: Earned 200,000,000 credits (330,326,714)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,072,601)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,441,257)AP 26/27 Jade: Earned 10,000,000 credits (17,954,963)GFN Sapphire: Earned 20,000,000 credits (38,623,668)PSA Emerald: Earned 50,000,000 credits (79,952,619)
Message 50794 - Posted: 28 Feb 2012 | 20:39:02 UTC - in response to Message 50789.

Three mega primes in one month -- a short month -- is pretty spectacular, considering there's less than 50 that have ever been discovered.




There's 46 of them, as I write. So primegrid has now found exactly half of all known Mega primes!

It is about time to enter deeply in top ten territory. Even if that will cost me the green jersey, I would like to see a bigger one before the end of the month. Another GFN or a 321 would be enough to do it. So good luck and congratulations to Lumiukko.

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Message boards : News : 27 Mega Prime

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