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Integer

Every integer greater than 1 is either prime itself or is the product of prime numbers, and that, although the order of the primes in the second case is arbitrary, the primes themselves are not.

 

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Explanation

This is the fundamental theorem of arithmetic.

 

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Examples

On a Casio fx-82EX calculator, you can see that

666 = 2 × 3² × 37
1014 = 2 × 3 × 13²
6936 = 2³ × 3 × 17²

 

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History The Greek mathematician Euclid composed the most influential book in the history of mathematics, Elements, in 300 BC. In it, the product of prime numbers was already mentioned.

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