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Message boards : News : GFN-262144 Mega Prime!

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Van ZimmermanProject donor
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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 (15,483,829)ESP LLR Sapphire: Earned 20,000,000 credits (20,089,407)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (20,037,992)PPS LLR Sapphire: Earned 20,000,000 credits (20,941,233)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 (17,248,562)SGS LLR Jade: Earned 10,000,000 credits (14,134,778)TRP LLR Sapphire: Earned 20,000,000 credits (20,619,871)Woodall LLR Jade: Earned 10,000,000 credits (16,927,546)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,326,839)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 (3,407,459,730)PSA Double Bronze: Earned 100,000,000 credits (187,094,621)
Message 115744 - Posted: 3 Mar 2018 | 13:09:30 UTC

On 1 March 2018, 04:16:07 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:

4489246^262144+1

The prime is 1,743,828 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 7th for Generalized Fermat primes and 56th overall.

The discovery was made by Wolfgang Schwieger (DeleteNull) of Germany using an NVIDIA GeForce GTX 1070 Ti in an Intel(R) CPU at 2.30GHz with 32GB RAM, running Windows 10 Professional Edition. This GPU took about 18 minutes to probable prime (PRP) test with GeneferOCL3. Wolfgang is a member of the SETI.Germany team.

The prime was verified on 1 March 2018, 04:28:47 by Jonathan Sipes (k4m1k4z3) of the United States using an NVIDIA GeForce GTX 1080 GPU in an Intel(R) Core(TM) i7-2700K CPU at 3.50GHz with 8GB RAM, running Windows 7 Professional Edition. This GPU took about 20 minutes to probable prime (PRP) test with GeneferOCL3. Jonathan is a member of the Overclock.net team.

The PRP was confirmed prime by an Intel(R) Xeon(R) E3-1240 v6 CPU @ 3.70GHz with 2GB RAM, running Linux. This computer took about 5 hours 33 minutes to complete the primality test using LLR.

For more details, please see the official announcement.

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Message boards : News : GFN-262144 Mega Prime!

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