Calculate the Greatest Common Factor or GCF of 1430 and 2438
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The instructions to find the GCF of 1430 and 2438 are the next:
1. Decompose all numbers into prime factors
1430 | 2 |
715 | 5 |
143 | 11 |
13 | 13 |
1 |
2438 | 2 |
1219 | 23 |
53 | 53 |
1 |
2. Write all numbers as the product of its prime factors
Prime factors of 1430 | = | 2 . 5 . 11 . 13 |
Prime factors of 2438 | = | 2 . 23 . 53 |
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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