Q: What are the prime factors of the number 637,625,439?

 A: 3, 11, 113, 2111

Why are those the prime factors of the number 637,625,439?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 637,625,439

637,625,439
Factor Arrows
3212,541,813
Factor Arrows
370,847,271
Factor Arrows
323,615,757
Factor Arrows
37,871,919
Factor Arrows
32,623,973
Factor Arrows
11238,543
Factor Arrows
1132,111

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

3, 11, 113, 2111

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 11 x 113 x 2,111 = 637,625,439

This can also be written as 35 x 111 x 1131 x 2,1111 = 637,625,439

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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