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Largest Prime Number Ever Found Has Over 23 Million Digits


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Prime numbers

We're going to need a bigger building.

Credit: Robert Brook/Science Photo Library

Maths fans can't get enough of numbers that are millions of digits long and can only be divided by themselves and one. Now, through a collaborative effort, utilising computers distributed around the world, they've discovered that the number 277,232,917 – 1 is prime.

From New Scientist
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