On 14 July 2016, 18:48:35 UTC, PrimeGrid’s PPS Mega Prime Search project found the Mega Prime:
The prime is 1,019,606 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 165th overall.
The discovery was made by Andreas Mueller (Andreas) of Germany using an Intel(R) Xeon(R) CPU E5620 @ 2.40GHz with 16GB RAM, running Linux. This computer took about 3 hours 40 minutes to complete the primality test using LLR.
The prime was verified on 14 July 2016, 19:08:33 UTC, by Steve King (steveking) of the United States using an Intel(R) Core(TM) i5-4570 CPU @ 3.20GHz with 20GB RAM, running Microsoft Windows 10 Professional. This computer took about 1 hour 20 minutes to complete the primality test using LLR.
For more details, please see the official announcement.