On 17 Jan 2012 20:24:07 UTC, PrimeGrid’s Mega Prime Search, through PRPNet, found the Mega Prime: 81*2^3352924+1
The prime is 1,009,333 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 42nd overall. This prime is also a Generalized Fermat prime and ranks as the 6th largest found.
The discovery was made by Michał Gasewicz (Genn) of Poland using an Intel dual Xeon E5520 @ 2.27GHz with 12GB RAM, running 64 bit Linux. This computer took just over 4 hours 28 minutes to complete the primality test using LLR. Michał is a member of the BOINC@Poland team.
For more details, please see the official announcement.