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Anonymous
28 = 22 x 7
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28=2x2x7
Prime factorization of 28 is: 2 x 2 x 7
composite and 2*2*7 = 28
2x2x7
the prime factorization of 24 is 2*2*2*3 and 28 is2*2*7
When all the factors are prime numbers, that's a prime factorization.