On 12 February 2020, 14:26:58 UTC, PrimeGrid's Generalized Fermat Prime Search found the Mega Prime:
The prime is 1,832,137 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 15th for Generalized Fermat primes and 86th overall.
The discovery was made by Alen Kecic (Freezing) of Germany using an NVidia GeForce GTX 1660 Ti in an Intel(R) Core(TM) i7-7820X CPU @ 3.60GHz with 32GB RAM, running Microsoft Windows 10 Professional x64 Edition. This GPU took about 22 minutes to complete the probable prime (PRP) test using GeneferOCL2. Alen Kecic is a member of the SETI.Germany team.
The prime was verified on 12 February 2020, 14:32:50 UTC by Tom Greer (tng*) of the United States using an NVidia GeForce RTX 2080 in an Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz with 16GB RAM, running Microsoft Windows 10 Professional x64 Edition. This computer took about 13 minutes to complete the probable prime (PRP) test using GeneferOCL2. Tom Greer is a member of the Sicituradastra. team.
The PRP was confirmed prime by an Intel(R) Xeon(R) CPU E3-1240 v6 @ 3.70GHz with 4GB RAM, running Linux Debian. This computer took about 13 hours, 22 minutes to complete the primality test using LLR.
For more details, please see the official announcement.