On 24 March 2016, 00:45:48 UTC, PrimeGrid’s PPS Mega Prime Search project found the Mega Prime:
The prime is 1,008,311 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 153rd overall.
The discovery was made by Timothy Reichard (Timothy Reichard) of the United States using an Intel(R) Core(TM) i7-4960HQ CPU @ 2.60GHz with 16GB RAM, running Darwin. This computer took about 1 hour 10 minutes to complete the primality test using LLR.
The prime was verified on 24 March 2016, 00:58:33 UTC, by Alex Huetter (ahlx) of Austria using an Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz with 4GB RAM, running Microsoft Windows 10 Professional. This computer took about 1 hour 14 minutes to complete the primality test using LLR. Alex is a member of the Gentoo Linux Users Everywhere team.
For more details, please see the official announcement.