On 5 September 2016, 02:15:19 UTC, PrimeGrid’s PPS Mega Prime Search project found the Mega Prime:
The prime is 1,048,989 digits long and will enter Chris Caldwell's The Largest Known Primes Database ranked 152nd overall.
The discovery was made 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.