Q: What are the prime factors of the number 15,955,455?

 A: 3, 5, 439, 2423

Why are those the prime factors of the number 15,955,455?

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 15,955,455

15,955,455
Factor Arrows
35,318,485
Factor Arrows
51,063,697
Factor Arrows
4392,423

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, 439, 2423

We can check our work by multiplying all of the prime factors together: 3 x 5 x 439 x 2,423 = 15,955,455

This can also be written as 31 x 51 x 4391 x 2,4231 = 15,955,455

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


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