On 22 June 2016, 00:53:21 UTC, PrimeGrid’s PPS Mega Prime Search project found the Mega Prime:
The prime is 1,063,529 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 130th overall.
The discovery was made by William de Thomas (wdethomas) of Puerto Rico using an Intel(R) Xeon(R) CPU E5-2623 v3 @ 3.00GHz with 16GB RAM, running Microsoft Windows 10 Professional. This computer took about 1 hour 21 minutes to complete the primality test using LLR. William is a member of the Puerto Rico Assisting Science.
For more details, please see the official announcement.