Q: What are the prime factors of the number 555,356,187?

 A: 3, 17, 19, 73, 2617

Why are those the prime factors of the number 555,356,187?

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 555,356,187

555,356,187
Factor Arrows
3185,118,729
Factor Arrows
361,706,243
Factor Arrows
173,629,779
Factor Arrows
19191,041
Factor Arrows
732,617

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, 17, 19, 73, 2617

We can check our work by multiplying all of the prime factors together: 3 x 3 x 17 x 19 x 73 x 2,617 = 555,356,187

This can also be written as 32 x 171 x 191 x 731 x 2,6171 = 555,356,187

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


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