Q: What are the prime factors of the number 73,317,430?

 A: 2, 5, 17, 41, 67, 157

Why are those the prime factors of the number 73,317,430?

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 73,317,430

73,317,430
Factor Arrows
236,658,715
Factor Arrows
57,331,743
Factor Arrows
17431,279
Factor Arrows
4110,519
Factor Arrows
67157

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, 17, 41, 67, 157

We can check our work by multiplying all of the prime factors together: 2 x 5 x 17 x 41 x 67 x 157 = 73,317,430

This can also be written as 21 x 51 x 171 x 411 x 671 x 1571 = 73,317,430

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


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