Greatest Common Factor (GCF) of 690 and 138

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To get the Greates Common Factor (GCF) of 690 and 138 we need to factor each value first and then we choose all the copies of factors and multiply them:

690:   23523
138:   23 23
GCF:   23 23

The Greates Common Factor (GCF) is:   2 x 3 x 23 = 138

 

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