2 x 2 x 5 = 20
2 x 2 x 2 x 5 = 80
2 x 2 x 5 = 20, the GCF
20/80 = 1/4
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Prime factorization refers to whole numbers, not fractions. 100/50 = 2, which is already prime and therefore has no prime factorization other than itself.
it is easier to find the prime factorization because you do not have to keep multiplying over and over and over again!!!!
2/5
875 = 53*7 1000 = 23*53
43 is already prime; no factorization required.