There is no Greatest Common Factor (GCF) for a single number. The Greatest Common Factor (GCF) is the largest factor common to two or more given numbers. You need at least two numbers to find a GCF. If that's 4 and 5, the GCF is 1.
You need at least two numbers to find a GCF.
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The greatest common factor of 45 and 225 is 15.The GCF is: 45
The greatest common factor of 26 and 45 is 1.
The greatest common factor of 90 , 30 , 45 = 15
The greatest common factor of 8 and 45 is 1. The numbers 8 and 45 have no prime factors in common.
45 is the greatest common factor of 90 and 135.The GCF is 45.