On 13 June 2017, 10:46:25 UTC, PrimeGrid’s PPS Mega Prime Search project found the Mega Prime:
The prime is 1,024,639 digits long and will enter Chris Caldwell's The Largest Known Primes Database ranked 202nd overall.
The discovery was made by Randall Scalise (Randall J. Scalise) of the United States using an Intel(R) Core(TM) i5-4590 CPU @ 3.30GHz with 8GB RAM, running Linux. This computer took about 1 hour 21 minutes to complete the primality test using LLR.
The prime was verified on 13 June 2017, 16:05:06 UTC by Michael Bowe (No_Name) of Germany using an Intel(R) Xeon(R) E3-1230 v5 CPU @ 3.40GHz with 32GB RAM, running Microsoft Windows Server 2012 R2 Foundation Edition. This computer took about 1 hour 24 minutes to complete the primality test using LLR. Michael is a member of the SETI.Germany team.
For more details, please see the official announcement.