On 9 July 2017, 15:35:22 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:
The prime is 1,005,270 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 Jochen Beck (dh1saj) of Germany using an NVIDIA GeForce GTX 1060 in an Intel(R) Core(TM)2 Quad Q9550 CPU at 2.83GHz with 10GB RAM, running Microsoft Windows 7 Professional Edition. This GPU took about 13 minutes to probable prime (PRP) test with GeneferOCL2. Jochen is a member of the SETI.Germany team.
The prime was verified on 9 July 2017, 16:05:01 UTC by Ráďa Plšák (Plšák Ráďa) of the Czech Republic using an NVIDIA GeForce GTX 1050 Ti in an AMD FX(TM) 8320 with 16GB RAM, running Microsoft Windows 10 Core Edition. This GPU took about 34 minutes to probable prime (PRP) test with GeneferOCL2. Ráďa is a member of the Czech National Team.
The PRP was confirmed prime by an Intel(R) Xeon(R) E5-2670 CPU @ 2.60GHz with 32GB RAM, running Linux. This computer took about 15 hours 18 minutes to complete the primality test using LLR.
For more details, please see the official announcement.