Q: What are the prime factors of the number 15,402,771?

 A: 3, 179, 3187

Why are those the prime factors of the number 15,402,771?

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 15,402,771

15,402,771
Factor Arrows
35,134,257
Factor Arrows
31,711,419
Factor Arrows
3570,473
Factor Arrows
1793,187

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, 179, 3187

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 179 x 3,187 = 15,402,771

This can also be written as 33 x 1791 x 3,1871 = 15,402,771

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


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