Calculate the Greatest Common Factor or GCF of 52 and 2490
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The instructions to find the GCF of 52 and 2490 are the next:
1. Decompose all numbers into prime factors
52 | 2 |
26 | 2 |
13 | 13 |
1 |
2490 | 2 |
1245 | 3 |
415 | 5 |
83 | 83 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 52 | = | 22 . 13 |
Prime factors of 2490 | = | 2 . 3 . 5 . 83 |
3. Choose the common prime factors with the lowest exponent
Common prime factors: 2
Common prime factors with the lowest exponent: 21
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 = 21 = 2
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