Q: What are the prime factors of the number 25,251,320?

 A: 2, 5, 43, 53, 277

Why are those the prime factors of the number 25,251,320?

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 25,251,320

25,251,320
Factor Arrows
212,625,660
Factor Arrows
26,312,830
Factor Arrows
23,156,415
Factor Arrows
5631,283
Factor Arrows
4314,681
Factor Arrows
53277

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, 5, 43, 53, 277

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 43 x 53 x 277 = 25,251,320

This can also be written as 23 x 51 x 431 x 531 x 2771 = 25,251,320

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


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