10 = 2 * 5
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The prime factorization of a composite number is a string of prime numbers. 2 x 3 x 5 = 30
A prime factorization is the unique way to list any integer greater than 1 as a product of prime numbers. An example of the prime factorization of a composite number is 20=2*2*5 or 20=2^2*5. The prime factorization of a prime number is itself. e.g. 11=11.
250 = 2*5*5*5
300 = 2*2*3*5*5
2200 = 2 * 2 * 2 * 5 * 5 * 11