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Message boards :
News :
World Record Fermat Divisor Found!
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Scott Brown Volunteer moderator Project administrator Volunteer tester Project scientist
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Joined: 17 Oct 05 Posts: 2227 ID: 1178 Credit: 9,275,345,488 RAC: 5,776,051
                                        
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On 22 January 2020, 15:00:58 UTC, PrimeGrid's Fermat Divisor Search found the Mega Prime:
13*2^5523860+1 Divides F(5523858)
The prime is 1,662,849 digits long and will enter Chris Caldwell's The Largest Known Primes Database ranked 115th overall. This is a world record for prime Fermat divisors, and it is also ranked 4th for “weighted” prime Fermat divisors.
The discovery was made by Scott Brown (Scott Brown) of the United States using an Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz with 16GB RAM, running Microsoft Windows 10 Core x64 Edition. This computer took about 39 minutes to complete the primality test using multithreaded LLR. Scott is a member of the Aggie The Pew team.
The prime was verified on 22 January 2020, 15:11:39 UTC by Stefan Larsson (288larsson) of Sweden using an Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz with 8GB RAM, running Microsoft Windows 10 Core x64 Edition. This computer took about 46 minutes to complete the primality test using multithreaded LLR. Stefan is a member of the Sicituradastra. team.
For more details, please see the official announcement.
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Congrats on this major find!
Cheers Rick | |
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Indeed congrats! | |
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Fantastic !
Congrats to both finder and DC !
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"Accidit in puncto, quod non contingit in anno."
Something that does not occur in a year may, perchance, happen in a moment. | |
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Dave  Send message
Joined: 13 Feb 12 Posts: 2863 ID: 130544 Credit: 1,023,291,180 RAC: 1,215,841
                      
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Fantastic! | |
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Fantastic!
:)
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"Accidit in puncto, quod non contingit in anno."
Something that does not occur in a year may, perchance, happen in a moment. | |
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Glad to see that the subproject turned out one divisor. Hopefully we get another before it is all done.
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Congratulations! | |
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robish Volunteer moderator Volunteer tester
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Joined: 7 Jan 12 Posts: 1862 ID: 126266 Credit: 5,288,509,570 RAC: 2,732,499
                           
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Congrats again Scott. Awesome find!
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My lucky numbers 10590941048576+1 and 224584605939537911+81292139*23#*n for n=0..26 | |
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Scott Brown Volunteer moderator Project administrator Volunteer tester Project scientist
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Joined: 17 Oct 05 Posts: 2227 ID: 1178 Credit: 9,275,345,488 RAC: 5,776,051
                                        
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Thanks everyone! I am really excited about the find, not just for myself, but for PrimeGrid as well.
Depending on how people decide to allocate there resources, I think DIV could yield a prime or two during TDP (maybe even another divisor) and be a factor in a couple of the jerseys this year!
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Message boards :
News :
World Record Fermat Divisor Found! |