Q: What are the prime factors of the number 74,479,210?

 A: 2, 5, 13, 17, 67, 503

Why are those the prime factors of the number 74,479,210?

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 74,479,210

74,479,210
Factor Arrows
237,239,605
Factor Arrows
57,447,921
Factor Arrows
13572,917
Factor Arrows
1733,701
Factor Arrows
67503

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:

2, 5, 13, 17, 67, 503

We can check our work by multiplying all of the prime factors together: 2 x 5 x 13 x 17 x 67 x 503 = 74,479,210

This can also be written as 21 x 51 x 131 x 171 x 671 x 5031 = 74,479,210

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


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