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

Toggle Menu

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise

Advanced search

Message boards : News : Yet another SR5 prime discovered!

Author Message
Profile Michael GoetzProject donor
Volunteer moderator
Project administrator
Project scientist
Avatar
Send message
Joined: 21 Jan 10
Posts: 12516
ID: 53948
Credit: 181,809,277
RAC: 111,875
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 PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,063,182)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 (2,145,754)PPS LLR Ruby: Earned 2,000,000 credits (2,768,012)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (34,034,802)SR5 LLR Turquoise: Earned 5,000,000 credits (8,168,791)SGS LLR Ruby: Earned 2,000,000 credits (2,011,264)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Ruby: Earned 2,000,000 credits (4,808,257)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,059,304)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 (7,090,096)GFN Emerald: Earned 50,000,000 credits (64,584,904)PSA Jade: Earned 10,000,000 credits (10,135,447)
Message 75950 - Posted: 27 Apr 2014 | 16:05:11 UTC
Last modified: 27 Apr 2014 | 16:06:24 UTC

On 25 April 2014, 21:06:16 UTC, PrimeGrid’s Sierpinski/Riesel Base 5 Problem project eliminated k=326834 by finding the mega prime:

326834*5^1634978-1

The prime is 1,142,807 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 56th overall. This is the largest known base 5 mega prime. 82 k's now remain in the Riesel Base 5 Problem.

The discovery was made by Scott Brown (Scott Brown) of the United States using an Intel(R) Core(TM) i5-2410M CPU @ 2.30GHz with 6GB RAM running Microsoft Windows 7 Home Premium. This computer took about 44 hours and 32 minutes to complete the primality test using LLR. Scott is a member of the Duke University team.

The prime was verified on 26 April 2014 15:50:21 UTC, by Alejandro Kurtz (Alejandro) of Spain using an Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz with 5.5 GB RAM running Microsoft Windows 7 Professional. This computer took about 13 hours and 28 minutes to complete the primality test using LLR. Alejandro is a member of the CANAL@Boinc team.

For more details, please see the official announcement.

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 75952 - Posted: 27 Apr 2014 | 17:10:06 UTC - in response to Message 75950.

Congratz Scott for this new mega prime and this elimination on Sierpinski/Riesel Base 5 Problem !
2 primes in 2 months ! :)
Thanks Michael for the heads-up !
____________

Message boards : News : Yet another SR5 prime discovered!

[Return to PrimeGrid main page]
DNS Powered by DNSEXIT.COM
Copyright © 2005 - 2019 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 1.35, 1.95, 1.78
Generated 25 Jun 2019 | 6:17:11 UTC