Q: What are the prime factors of the number 521,525,074?

 A: 2, 7, 181, 277, 743

Why are those the prime factors of the number 521,525,074?

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 521,525,074

521,525,074
Factor Arrows
2260,762,537
Factor Arrows
737,251,791
Factor Arrows
181205,811
Factor Arrows
277743

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, 7, 181, 277, 743

We can check our work by multiplying all of the prime factors together: 2 x 7 x 181 x 277 x 743 = 521,525,074

This can also be written as 21 x 71 x 1811 x 2771 x 7431 = 521,525,074

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


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