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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 Sapphire: Earned 20,000,000 credits (20,861,725)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 (20,999,495)PSP LLR Sapphire: Earned 20,000,000 credits (20,117,197)SoB LLR Sapphire: Earned 20,000,000 credits (21,208,789)SR5 LLR Sapphire: Earned 20,000,000 credits (20,278,667)SGS LLR Jade: Earned 10,000,000 credits (17,068,982)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 (20,359,057)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 (3,555,666,752)PSA Double Bronze: Earned 100,000,000 credits (188,814,621)
Message 115239 - Posted: 19 Feb 2018 | 12:26:52 UTC

On 15 February 2018, 02:15:40 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:

4246258^262144+1

The prime is 1,737,493 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 7th for Generalized Fermat primes and 57th overall.

The discovery was made by Rob Gahan (Robish) of Ireland using an NVIDIA GeForce Titan X in an Intel(R) Core(TM) i7-5930K CPU at 3.50GHz with 32GB RAM, running Windows 10 Core Edition. This GPU took about 23 minutes to probable prime (PRP) test with GeneferOCL3. Rob is a member of the Storm team.

The prime was verified on 15 February 2018, 02:18:23 by Daniel Frużyński ([B@P] Daniel) of Poland using an NVIDIA GeForce GTX 1070 GPU in an Intel(R) Core(TM) i7-2600K CPU at 3.40GHz with 16GB RAM, running Windows 10 Professional Edition. This GPU took about 20 minutes to probable prime (PRP) test with GeneferOCL3. Daniel is a member of the BOINC@Poland team.

The PRP was confirmed prime by an Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz with 16GB RAM, running Microsoft Windows 10 Professional. This computer took about 4 hours 37 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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