Q: What are the prime factors of the number 158,674,425?

 A: 3, 5, 7, 13, 67, 347

Why are those the prime factors of the number 158,674,425?

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 158,674,425

158,674,425
Factor Arrows
352,891,475
Factor Arrows
510,578,295
Factor Arrows
52,115,659
Factor Arrows
7302,237
Factor Arrows
1323,249
Factor Arrows
67347

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, 5, 7, 13, 67, 347

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 7 x 13 x 67 x 347 = 158,674,425

This can also be written as 31 x 52 x 71 x 131 x 671 x 3471 = 158,674,425

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


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