5 x 13 = 65
2 x 2 x 2 x 2 x 7 = 112
No common prime factors, the GCF is 1.
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112 = 121
The prime factorization of 560 is: 2, 5, and 7
You can find prime factorization worksheets at math world dot com. They have many to choose from and download and print for your convenience. Great site to use.
Use a factor tree. 186 93,2 31,3,2
120 60,2 30,2,2 15,2,2,2 5,3,2,2,2