PrimeGrid
Please visit donation page to help the project cover running costs for this month

Sponsored by:

Hosted at and sponsored by Rackspace.

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise

Advanced search

Message boards : News : New SR5 Mega Prime Found!

Author Message
Scott BrownProject donor
Volunteer moderator
Project administrator
Volunteer tester
Project scientist
Avatar
Send message
Joined: 17 Oct 05
Posts: 1750
ID: 1178
Credit: 5,465,057,827
RAC: 3,399,738
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 (103,702,522)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 (128,549,588)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 (100,539,349)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 (234,207,567)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,105,652,207)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 (101,295,857)GFN Double Gold: Earned 500,000,000 credits (875,152,967)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 72292 - Posted: 15 Jan 2014 | 17:16:54 UTC

On 29 December 2013, 18:56:35 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=37292 by finding the mega prime:

37292*5^1487989+1

The prime is 1,040,065 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 65th overall. This is the largest known base 5 mega prime. 41 k's now remain in the Sierpinski Base 5 Problem.

The discovery was made by Stephen R. Cilliers (SteveRC) of South Africa using an Intel(R) Core(TM) i5-3230M CPU @ 2.60GHz with 8 GB RAM running Microsoft Windows 8.1. This computer took about 3 hours and 50 minutes to complete the primality test using LLR. Stephen is a member of the Clifford Welding Systems team.

The prime was verified on 30 December 2013 1:48:41 UTC, by [AF>France>Aquitaine>Cote-Adour-et-Gaves]Bernard 64250 of France using an Intel(R) Core(TM) i3-2330M CPU @ 2.20GHz with 4 GB RAM running Microsoft Windows 7 Home Premium. This computer took about 5 hours and 1 minute to complete the primality test using LLR. [AF>France>Aquitaine>Cote-Adour-et-Gaves]Bernard 64250 is a member of the L'Alliance Francophone team.

For more details, please see the official announcement.


Profile WarpedProject donor
Avatar
Send message
Joined: 25 Aug 08
Posts: 288
ID: 27792
Credit: 27,584,075
RAC: 0
321 LLR Silver: Earned 100,000 credits (105,595)Cullen LLR Silver: Earned 100,000 credits (100,566)PPS LLR Silver: Earned 100,000 credits (467,197)PSP LLR Silver: Earned 100,000 credits (117,635)SoB LLR Bronze: Earned 10,000 credits (70,753)SR5 LLR Bronze: Earned 10,000 credits (44,970)SGS LLR Silver: Earned 100,000 credits (346,635)TRP LLR Silver: Earned 100,000 credits (298,952)Woodall LLR Silver: Earned 100,000 credits (107,939)321 Sieve (suspended) Bronze: Earned 10,000 credits (38,031)Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (93,149)Generalized Cullen/Woodall Sieve Amethyst: Earned 1,000,000 credits (1,013,621)PPS Sieve Jade: Earned 10,000,000 credits (17,454,585)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,203,660)TRP Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,431,176)AP 26/27 Bronze: Earned 10,000 credits (27,387)GFN Silver: Earned 100,000 credits (124,947)PSA Ruby: Earned 2,000,000 credits (4,529,162)
Message 72298 - Posted: 15 Jan 2014 | 18:20:48 UTC - in response to Message 72292.

Well done, boet!
____________
Warped

John
Send message
Joined: 31 Dec 12
Posts: 4
ID: 187271
Credit: 148,696
RAC: 0
321 LLR Bronze: Earned 10,000 credits (11,222)Cullen LLR Bronze: Earned 10,000 credits (13,683)PPS LLR Bronze: Earned 10,000 credits (45,989)PSP LLR Bronze: Earned 10,000 credits (12,979)SR5 LLR Bronze: Earned 10,000 credits (18,541)TRP LLR Bronze: Earned 10,000 credits (11,417)PPS Sieve Bronze: Earned 10,000 credits (33,710)
Message 72301 - Posted: 15 Jan 2014 | 18:41:14 UTC

Congrats and all, but why are these just now being reported, if I may ask?

Profile Michael GoetzProject donor
Volunteer moderator
Project administrator
Project scientist
Avatar
Send message
Joined: 21 Jan 10
Posts: 11375
ID: 53948
Credit: 149,975,281
RAC: 126,765
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 (24,516,335)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 (1,938,719)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 (2,825,666)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 72302 - Posted: 15 Jan 2014 | 18:51:53 UTC - in response to Message 72301.

Congrats and all, but why are these just now being reported, if I may ask?


Holiday schedules.
____________
Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

My lucky number is 75898^524288+1

Scott BrownProject donor
Volunteer moderator
Project administrator
Volunteer tester
Project scientist
Avatar
Send message
Joined: 17 Oct 05
Posts: 1750
ID: 1178
Credit: 5,465,057,827
RAC: 3,399,738
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 (103,702,522)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 (128,549,588)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 (100,539,349)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 (234,207,567)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,105,652,207)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 (101,295,857)GFN Double Gold: Earned 500,000,000 credits (875,152,967)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 72306 - Posted: 15 Jan 2014 | 19:50:58 UTC - in response to Message 72301.

Congrats and all, but why are these just now being reported, if I may ask?


I was traveling without internet connection other than my cell phone from Dec. 26th - Jan. 5th.

Profile ThomasProject donor
Send message
Joined: 5 Jan 14
Posts: 284
ID: 291161
Credit: 5,391,192
RAC: 0
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 72312 - Posted: 16 Jan 2014 | 10:54:58 UTC - in response to Message 72292.
Last modified: 16 Jan 2014 | 11:28:55 UTC

Well done Stephen (& Bernard) ! :)
Thanks for the update Scott.
____________

Post to thread

Message boards : News : New SR5 Mega Prime Found!

[Return to PrimeGrid main page]
Copyright © 2005 - 2018 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 0.61, 0.91, 1.16
Generated 13 Nov 2018 | 21:13:15 UTC