Q: What are the prime factors of the number 67,173,340?

 A: 2, 5, 13, 23, 47, 239

Why are those the prime factors of the number 67,173,340?

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 67,173,340

67,173,340
Factor Arrows
233,586,670
Factor Arrows
216,793,335
Factor Arrows
53,358,667
Factor Arrows
13258,359
Factor Arrows
2311,233
Factor Arrows
47239

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, 23, 47, 239

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 13 x 23 x 47 x 239 = 67,173,340

This can also be written as 22 x 51 x 131 x 231 x 471 x 2391 = 67,173,340

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


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