Q: What are the prime factors of the number 551,523,126?

 A: 2, 3, 7, 11, 170539

Why are those the prime factors of the number 551,523,126?

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 551,523,126

551,523,126
Factor Arrows
2275,761,563
Factor Arrows
391,920,521
Factor Arrows
713,131,503
Factor Arrows
71,875,929
Factor Arrows
11170,539

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, 170539

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 7 x 11 x 170,539 = 551,523,126

This can also be written as 21 x 31 x 72 x 111 x 170,5391 = 551,523,126

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


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