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Which is the largest prime number ever known?

Updated: 8/21/2019
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9y ago

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Please note that there cannot be a largest Prime number; Euclid proved that about 2000 years ago. As to the largest known prime number, according to the Wikipedia, as of January 2014, the largest known prime number is 2 to the power 57,885,161 − 1, a number with 17,425,170 digits. This number was found to be a prime in January 2013.

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Q: Which is the largest prime number ever known?
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