Largest Prime Number

Congratulations to Curtis Cooper of GIMPS for finding the largest known prime (for now!). Are you ready? It’s a Mersenne Prime and apparently it took 39 days of computations to verify its primality. Here it is:

2^{57,885,161} -1

And here’s a nice write up on CNN. (HT: Zach Kram, Prisca Chase)

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