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 : GFN-131072 Mega Prime!

Author Message
Van ZimmermanProject donor
Volunteer moderator
Project administrator
Volunteer tester
Project scientist
Send message
Joined: 30 Aug 12
Posts: 1826
ID: 168418
Credit: 4,706,476,945
RAC: 6,998,584
Discovered the World's First GFN-20 prime!!!Discovered 2 mega primesFound 1 prime in the 2018 Tour de Primes321 LLR Sapphire: Earned 20,000,000 credits (20,089,185)Cullen LLR Jade: Earned 10,000,000 credits (12,805,028)ESP LLR Sapphire: Earned 20,000,000 credits (20,068,689)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (20,037,992)PPS LLR Sapphire: Earned 20,000,000 credits (20,106,782)PSP LLR Sapphire: Earned 20,000,000 credits (20,117,197)SoB LLR Sapphire: Earned 20,000,000 credits (21,208,789)SR5 LLR Jade: Earned 10,000,000 credits (14,389,640)SGS LLR Jade: Earned 10,000,000 credits (12,910,430)TRP LLR Sapphire: Earned 20,000,000 credits (20,619,871)Woodall LLR Jade: Earned 10,000,000 credits (14,056,546)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,199,057)PPS Sieve Double Amethyst: Earned 1,000,000,000 credits (1,051,222,753)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,189,695)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,102,079)AP 26/27 Emerald: Earned 50,000,000 credits (51,669,540)GFN Double Ruby: Earned 2,000,000,000 credits (3,185,083,986)PSA Double Bronze: Earned 100,000,000 credits (181,612,834)
Message 102173 - Posted: 14 Dec 2016 | 11:56:21 UTC
Last modified: 14 Dec 2016 | 13:36:18 UTC

On 11 December 2016, 02:52:40 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:

44438760^131072+1

The prime is 1,002,408 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 19th for Generalized Fermat primes and 198th overall.

The discovery was made by Håkan Lind (sangis43) of Sweden using an NVIDIA GeForce GTX 960 in an Intel(R) Core(TM) i7-6800k CPU with 16GB RAM, running Microsoft Windows 10 Professional. This GPU took about 22 minutes to probable prime (PRP) test with GeneferOCL4. Håkan is a member of the Sicituradastra. team.

The PRP was confirmed prime by an Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz with 16GB RAM, running Windows 7 Ultimate. This computer took about 8 hours 58 minutes to complete the primality test using LLR.

For more details, please see the official announcement.

Post to thread

Message boards : News : GFN-131072 Mega Prime!

[Return to PrimeGrid main page]
Copyright © 2005 - 2018 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 3.78, 2.70, 2.26
Generated 21 May 2018 | 21:05:53 UTC