Description: Prime decomposition: in many cases, know that a number is prime is not enough, it also needs to know about the number. Every positive integer greater than 1 can be expressed as the product of prime numbers. This factorization is unique, known as prime decomposition (prime factorization). For example, 60 can be decomposed into 2x2x3x5, which are each about the number of primes. Note that, in the same prime factorization can appear multiple times.
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primefactor.c
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