Q: What are the prime factors of the number 87,366,825?

 A: 3, 5, 7, 13, 17, 251

Why are those the prime factors of the number 87,366,825?

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 87,366,825

87,366,825
Factor Arrows
329,122,275
Factor Arrows
39,707,425
Factor Arrows
51,941,485
Factor Arrows
5388,297
Factor Arrows
755,471
Factor Arrows
134,267
Factor Arrows
17251

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:

3, 5, 7, 13, 17, 251

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 5 x 7 x 13 x 17 x 251 = 87,366,825

This can also be written as 32 x 52 x 71 x 131 x 171 x 2511 = 87,366,825

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


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