On 23 April 2017, 22:31:40 UTC, PrimeGrid’s PPS Mega Prime Search project found the Mega Prime:
The prime is 1,020,636 digits long and will enter Chris Caldwell's The Largest Known Primes Database ranked 205th overall.
The discovery was made by Rolf Henrik Nilsson (puh32) of Sweden using an Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz with 16GB RAM, running Microsoft Windows 10 Core Edition. This computer took about 49 minutes to complete the primality test using LLR.
The prime was verified on 24 April 2017 11:04:31 UTC, by Randall Scalise (Randall J. Scalise) of the United States using an Intel(R) Core(TM) i5-4570 CPU @ 3.20GHz with 8GB RAM running Linux. This computer took about 1 hour 8 minutes to complete the primality test using LLR.
For more details, please see the official announcement.