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Message boards : News : Another GFN-131072 Mega Prime!

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Van ZimmermanProject donor
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Joined: 30 Aug 12
Posts: 1923
ID: 168418
Credit: 5,244,363,144
RAC: 4,634,880
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 (21,163,640)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 Sapphire: Earned 20,000,000 credits (20,055,153)TRP LLR Sapphire: Earned 20,000,000 credits (20,619,871)Woodall LLR Sapphire: Earned 20,000,000 credits (20,248,267)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,360,148)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 (3,683,981,491)PSA Double Bronze: Earned 100,000,000 credits (192,254,621)
Message 108913 - Posted: 12 Jul 2017 | 20:36:08 UTC
Last modified: 13 Jul 2017 | 8:27:32 UTC

On 10 July 2017, 08:34:34 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:

46736070^131072+1

The prime is 1,005,277 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 24th for Generalized Fermat primes and 240th overall.

The discovery was made by Tom Greer (tng*) of the United States using an NVidia GeForce GTX 1080 GPU in an Intel(R) Core(TM) i7-6850K CPU at 3.60GHz with 16GB RAM, running Microsoft Windows 10 Professional Edition. This GPU took about 15 minutes to probable prime (PRP) test with GeneferOCL2. Tom is a member of the Sicituradastra. team.

The prime was verified on 11 July 2017, 04:33:58 UTC by Thomas Midle (BoSoxFan86) of the United States using an AMD Radeon R7 M270 GPU in an Intel(R) Core(TM) i7-5500U CPU @ 2.40GHz with 12GB RAM, running Microsoft Windows 10 Core Edition. This GPU took about 2 hours 7 minutes to probable prime (PRP) test with GeneferOCL2. Thomas is a member of the Gridcoin team.

The PRP was confirmed prime by an Intel(R) Xeon (R) E5-2670 CPU CPU @ 2.60GHz with 32GB RAM, running Linux. This computer took about 15 hours 20 minutes to complete the primality test using LLR.

For more details, please see the official announcement.

numbermaniac
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Joined: 28 Mar 14
Posts: 92
ID: 305955
Credit: 3,175,517
RAC: 2,164
321 LLR Bronze: Earned 10,000 credits (17,273)PPS LLR Silver: Earned 100,000 credits (375,534)SR5 LLR Silver: Earned 100,000 credits (105,157)SGS LLR Silver: Earned 100,000 credits (100,862)TRP LLR Silver: Earned 100,000 credits (105,612)Generalized Cullen/Woodall Sieve Silver: Earned 100,000 credits (211,357)PPS Sieve Amethyst: Earned 1,000,000 credits (1,577,628)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (34,269)TRP Sieve (suspended) Bronze: Earned 10,000 credits (32,679)AP 26/27 Silver: Earned 100,000 credits (113,204)GFN Silver: Earned 100,000 credits (366,072)PSA Silver: Earned 100,000 credits (127,825)
Message 108914 - Posted: 13 Jul 2017 | 0:40:05 UTC

If I may nitpick, "2017" is missing at the start; all the posts I've seen usually include 2017 in the date :)
____________
6603*2^1411654+1 — 424955 digit PPSE (DC)

Van ZimmermanProject donor
Volunteer moderator
Project administrator
Volunteer tester
Project scientist
Send message
Joined: 30 Aug 12
Posts: 1923
ID: 168418
Credit: 5,244,363,144
RAC: 4,634,880
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 (21,163,640)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 Sapphire: Earned 20,000,000 credits (20,055,153)TRP LLR Sapphire: Earned 20,000,000 credits (20,619,871)Woodall LLR Sapphire: Earned 20,000,000 credits (20,248,267)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,360,148)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 (3,683,981,491)PSA Double Bronze: Earned 100,000,000 credits (192,254,621)
Message 108919 - Posted: 13 Jul 2017 | 8:43:22 UTC

Thanks for the catch. I'd like to say it was part of some grand strategy to see who is paying attention, but no, just an oversight on my part.

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Message boards : News : Another GFN-131072 Mega Prime!

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