Calculate the Greatest Common Factor or GCF of 2155
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The instructions to find the GCF of 2155 are the next:
1. Decompose all numbers into prime factors
2155 | 5 |
431 | 431 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 2155 | = | 5 . 431 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 5 , 431
Common prime factors with the lowest exponent: 51, 4311
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 = 51. 4311 = 2155
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