Q: What are the prime factors of the number 125,453,328?

 A: 2, 3, 7, 11, 13, 373

Why are those the prime factors of the number 125,453,328?

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 125,453,328

125,453,328
Factor Arrows
262,726,664
Factor Arrows
231,363,332
Factor Arrows
215,681,666
Factor Arrows
27,840,833
Factor Arrows
32,613,611
Factor Arrows
7373,373
Factor Arrows
753,339
Factor Arrows
114,849
Factor Arrows
13373

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, 11, 13, 373

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 7 x 11 x 13 x 373 = 125,453,328

This can also be written as 24 x 31 x 72 x 111 x 131 x 3731 = 125,453,328

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


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