Q: What are the prime factors of the number 100,425,528?

 A: 2, 3, 7, 17, 3907

Why are those the prime factors of the number 100,425,528?

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 100,425,528

100,425,528
Factor Arrows
250,212,764
Factor Arrows
225,106,382
Factor Arrows
212,553,191
Factor Arrows
34,184,397
Factor Arrows
31,394,799
Factor Arrows
3464,933
Factor Arrows
766,419
Factor Arrows
173,907

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, 3, 7, 17, 3907

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 7 x 17 x 3,907 = 100,425,528

This can also be written as 23 x 33 x 71 x 171 x 3,9071 = 100,425,528

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


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