It is indeed massive, more than 17 million digits long. A text file of the entire number contains more than 22 megabytes of information.
I like the way the CNN article says:
To prove there were no errors in the prime discovery process, the new prime was independently verified using different programs running on different hardware. Serge Batalov ran Ernst Mayer's MLucas software on a 32-core server in 6 days (resource donated by Novartis IT group) to verify the new prime. Jerry Hallett verified the prime using the CUDALucas software running on a NVidia GPU in 3.6 days. Finally, Dr. Jeff Gilchrist verified the find using the GIMPS software on an Intel i7 CPU in 4.5 days and the CUDALucas program on a NVidia GTX 560 Ti in 7.7 days.
- (2^57885161 - 1) + 17. This may not be prime, but 17 is pretty dodgy and it'll take them long enough to refute that it'll buy us some good glory time.
Um... it's even.
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