Prime factorization is a powerful tool when finding the lowest common multiple for use in fractions and greatest common factor when reducing fractions. It is used in algebra to find the possible factoring combinations when factoring polynomials.
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The prime factorization of 560 is: 2, 5, and 7
If your numbers have no prime factors in common, they are relatively prime.
To answer GCF and LCM questions.
Use the disibility rules
Once your prime factorization is complete and you discover that there are no numbers in common, the GCF is one and the numbers are declared to be relatively prime.