Q: What are the prime factors of the number 172,420,759?

 A: 7, 131, 26861

Why are those the prime factors of the number 172,420,759?

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 172,420,759

172,420,759
Factor Arrows
724,631,537
Factor Arrows
73,518,791
Factor Arrows
13126,861

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:

7, 131, 26861

We can check our work by multiplying all of the prime factors together: 7 x 7 x 131 x 26,861 = 172,420,759

This can also be written as 72 x 1311 x 26,8611 = 172,420,759

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


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