Q: What are the prime factors of the number 521,525,070?

 A: 2, 3, 5, 11, 43, 12251

Why are those the prime factors of the number 521,525,070?

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 521,525,070

521,525,070
Factor Arrows
2260,762,535
Factor Arrows
386,920,845
Factor Arrows
328,973,615
Factor Arrows
55,794,723
Factor Arrows
11526,793
Factor Arrows
4312,251

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, 5, 11, 43, 12251

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 11 x 43 x 12,251 = 521,525,070

This can also be written as 21 x 32 x 51 x 111 x 431 x 12,2511 = 521,525,070

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


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