Q: What are the prime factors of the number 28,511,379?

 A: 3, 13, 29, 2801

Why are those the prime factors of the number 28,511,379?

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 28,511,379

28,511,379
Factor Arrows
39,503,793
Factor Arrows
33,167,931
Factor Arrows
31,055,977
Factor Arrows
1381,229
Factor Arrows
292,801

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, 13, 29, 2801

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 13 x 29 x 2,801 = 28,511,379

This can also be written as 33 x 131 x 291 x 2,8011 = 28,511,379

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


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