On 19 April 2015, 01:16:36 UTC, PrimeGrid’s Mega Prime Search found the Mega Prime:
The prime is 1,046,804 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 109th overall.
The discovery was made by Tom Greer (tng*) of the United States using an Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz with 16GB RAM running Microsoft Windows 7 Ultimate. This computer took about 3 hours 5 minutes to complete the primality test using LLR. Tom is a member of the Sicituradastra. team.
The prime was verified on 19 April 2015, 03:32:00 UTC, by Naoki Yoshioka (oevrtaker@biomaterial) of Japan using an Intel(R) Xeon(R) CPU E5-2687W 0 @ 3.10GHz with 64GB RAM running Microsoft Windows 8.1 Enterprise. This computer took about 1 hour and 32 minutes to complete the primality test using LLR. Naoki is a member of the Doshisha University team.
For more details, please see the official announcement.