Q: What are the prime factors of the number 503,521,326?

 A: 2, 3, 7, 11, 83, 1459

Why are those the prime factors of the number 503,521,326?

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 503,521,326

503,521,326
Factor Arrows
2251,760,663
Factor Arrows
383,920,221
Factor Arrows
327,973,407
Factor Arrows
39,324,469
Factor Arrows
71,332,067
Factor Arrows
11121,097
Factor Arrows
831,459

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, 3, 7, 11, 83, 1459

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 7 x 11 x 83 x 1,459 = 503,521,326

This can also be written as 21 x 33 x 71 x 111 x 831 x 1,4591 = 503,521,326

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


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