The prime factorization of 560 is:
2, 5, and 7
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use division by primes to find the gcf
103 is already prime, no need for a factorization.
To find the prime factorization of a number: Begin by listing 2 numbers that will multiply to make your number. 6 = 2 * 3 Can we find 2 numbers to multiply to make 2, or 3? (aside from 1) No, of course not. In fact, 2 and 3 are prime. Once you have all primes, you can stop. 6 = 2 * 3 2 * 3 is the prime factorization of 6.
The prime factorization of 122 is: 2 x 61
11 is already prime.