Q: What are the prime factors of the number 72,413,757?

 A: 3, 13, 283

Why are those the prime factors of the number 72,413,757?

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 72,413,757

72,413,757
Factor Arrows
324,137,919
Factor Arrows
38,045,973
Factor Arrows
32,681,991
Factor Arrows
3893,997
Factor Arrows
3297,999
Factor Arrows
399,333
Factor Arrows
333,111
Factor Arrows
311,037
Factor Arrows
33,679
Factor Arrows
13283

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, 13, 283

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 13 x 283 = 72,413,757

This can also be written as 39 x 131 x 2831 = 72,413,757

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


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