Q: What are the prime factors of the number 425,144,225?

 A: 5, 11, 43, 157, 229

Why are those the prime factors of the number 425,144,225?

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 425,144,225

425,144,225
Factor Arrows
585,028,845
Factor Arrows
517,005,769
Factor Arrows
111,545,979
Factor Arrows
4335,953
Factor Arrows
157229

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:

5, 11, 43, 157, 229

We can check our work by multiplying all of the prime factors together: 5 x 5 x 11 x 43 x 157 x 229 = 425,144,225

This can also be written as 52 x 111 x 431 x 1571 x 2291 = 425,144,225

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


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