On 29 October 2017, 18:33:36 UTC, PrimeGrid’s PPS Mega Prime Search project found the Mega Prime:
The prime is 1,035,188 digits long and will enter Chris Caldwell's The Largest Known Primes Database ranked 207th overall.
The discovery was made by Randall Scalise (Randall J. Scalise) of the United States using an Intel(R) Core(TM) i5-3570 CPU @ 3.40GHz with 8GB RAM, running Windows 10 Enterprise Edition. This computer took about 1 hour 48 minutes to complete the primality test using LLR.
The prime was verified on 30 October 2017, 04:48:03 UTC by Pete Allivato (Todderbert) of the United States using an Intel(R) Xeon(R) E31240 CPU @ 3.30GHz with 8GB RAM, running Windows 7 Professional Edition. This computer took about 1 hour 27 minutes to complete the primality test using LLR. Pete is a member of the GPU Users Group team.
For more details, please see the official announcement.