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Message boards : News : GFN-524288 Mega Prime!

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Van ZimmermanProject donor
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Joined: 30 Aug 12
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Credit: 4,950,827,613
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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 (20,983,959)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 (17,301,684)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 (3,413,225,664)PSA Double Bronze: Earned 100,000,000 credits (187,094,621)
Message 116518 - Posted: 28 Mar 2018 | 11:45:28 UTC

On 20 March 2018, 08:28:32 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:

2061748^524288+1

The prime is 3,310,478 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 2nd for Generalized Fermat primes and 22nd overall.

The discovery was made by Cesare Marini (Cesare Marini) of Italy using an NVIDIA GeForce GTX 1060 in an Intel(R) Core(TM) i7-6700 CPU at 3.40GHz with 32GB RAM, running Windows 10 Professional Edition. This GPU took about 1 hour 32 minutes to probable prime (PRP) test with GeneferOCL5.

The prime was verified on 20 March 2018, 19:46:06 UTC by Håkan Lind (sangis43) of Sweden using an NVIDIA GeForce GTX 1070 in an Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz with 16GB RAM, running Windows 7 Professional Edition. This GPU took about 1 hour 16 minutes to probable prime (PRP) test with GeneferOCL5. Håkan is a member of the Sicituradastra. 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 21 hours 6 minutes to complete the primality test using LLR.

For more details, please see the official announcement.

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Message boards : News : GFN-524288 Mega Prime!

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