The greatest, and only, common factor of 57 (=3x19) and 28 (=22x7) is 1.
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The greatest common factor of the numbers 57 and 93 is 3.
The Greatest Common Factor (GCF) of 57 and 30 is 3.
The GCF is 3.
To find out the GCF of two numbers, you first split them into their prime factors: 57 = 3x19 27 = 3x3x3 The next step is to identify any common factors. In this case, both numbers have a single 3 as a prime factor. Thus, the greatest common factor of 57 and 27 is 3.
38 is 2 x 19