Q: What are the prime factors of the number 551,050,398?

 A: 2, 3, 37, 389, 709

Why are those the prime factors of the number 551,050,398?

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 551,050,398

551,050,398
Factor Arrows
2275,525,199
Factor Arrows
391,841,733
Factor Arrows
330,613,911
Factor Arrows
310,204,637
Factor Arrows
37275,801
Factor Arrows
389709

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, 37, 389, 709

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 37 x 389 x 709 = 551,050,398

This can also be written as 21 x 33 x 371 x 3891 x 7091 = 551,050,398

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


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