Q: What are the prime factors of the number 556,287,380?

 A: 2, 5, 11, 89, 28411

Why are those the prime factors of the number 556,287,380?

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 556,287,380

556,287,380
Factor Arrows
2278,143,690
Factor Arrows
2139,071,845
Factor Arrows
527,814,369
Factor Arrows
112,528,579
Factor Arrows
8928,411

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, 5, 11, 89, 28411

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 11 x 89 x 28,411 = 556,287,380

This can also be written as 22 x 51 x 111 x 891 x 28,4111 = 556,287,380

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


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