On 17 Apr 2019, 11:00:27 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:
The prime is 3,379,193 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 3rd for Generalized Fermat primes and 26th overall.
The discovery was made by Ed Goforth (BlisteringSheep) of the Netherlands Antilles using an NVIDIA GeForce GTX 760 in an Intel(R) Xeon(R) CPU E5-2687W v3 @ 3.10GHz CPU with 128GB RAM, running Linux. This GPU took about 3 hours 31 minutes to probable prime (PRP) test with GeneferOCL5. Ed is a member of the Christians team.
The prime was verified on 23 Apr 2019, 13:36:35 by Brent Schneider (KWSN-SpongeBob SquarePants) of Nepal using an NVIDIA GeForce GTX 1080 in an Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz with 16GB RAM, running Windows 10. This GPU took about 1 hour 17 minutes to probable prime (PRP) test with GeneferOCL5. Brent is a member of The Knights Who Say Ni! team.
The PRP was confirmed prime by an Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz with 16GB RAM, running Windows 10. This computer took about 25 hours 4 minutes to complete the primality test using multithreaded LLR.
For more details, please see the official announcement.