Q: What are the prime factors of the number 686,542,708?

 A: 2, 53, 3238409

Why are those the prime factors of the number 686,542,708?

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 686,542,708

686,542,708
Factor Arrows
2343,271,354
Factor Arrows
2171,635,677
Factor Arrows
533,238,409

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, 53, 3238409

We can check our work by multiplying all of the prime factors together: 2 x 2 x 53 x 3,238,409 = 686,542,708

This can also be written as 22 x 531 x 3,238,4091 = 686,542,708

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


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