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# Calculate the Greatest Common Factor or GCF of 139

The instructions to find the GCF of 139 are the next:

## 1. Decompose all numbers into prime factors

 139 139 1

## 2. Write all numbers as the product of its prime factors

 Prime factors of 139 = 139

## 3. Choose the common prime factors with the lowest exponent

Common prime factors: 139

Common prime factors with the lowest exponent: 1391

## 4. Calculate the Greatest Common Factor or GCF

Remember, to find the GCF of several numbers you must multiply the common prime factors with the lowest exponent.

GCF = 1391 = 139

Also calculates the:
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