Q: What are the prime factors of the number 25,872,842?

 A: 2, 37, 43, 47, 173

Why are those the prime factors of the number 25,872,842?

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 25,872,842

25,872,842
Factor Arrows
212,936,421
Factor Arrows
37349,633
Factor Arrows
438,131
Factor Arrows
47173

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, 37, 43, 47, 173

We can check our work by multiplying all of the prime factors together: 2 x 37 x 43 x 47 x 173 = 25,872,842

This can also be written as 21 x 371 x 431 x 471 x 1731 = 25,872,842

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


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