Q: What are the prime factors of the number 147,412,391?

 A: 7, 89, 151, 1567

Why are those the prime factors of the number 147,412,391?

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 147,412,391

147,412,391
Factor Arrows
721,058,913
Factor Arrows
89236,617
Factor Arrows
1511,567

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:

7, 89, 151, 1567

We can check our work by multiplying all of the prime factors together: 7 x 89 x 151 x 1,567 = 147,412,391

This can also be written as 71 x 891 x 1511 x 1,5671 = 147,412,391

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


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