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