Q: What are the prime factors of the number 10,157,700?

 A: 2, 3, 5, 7, 691

Why are those the prime factors of the number 10,157,700?

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 10,157,700

10,157,700
Factor Arrows
25,078,850
Factor Arrows
22,539,425
Factor Arrows
3846,475
Factor Arrows
5169,295
Factor Arrows
533,859
Factor Arrows
74,837
Factor Arrows
7691

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, 7, 691

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 5 x 7 x 7 x 691 = 10,157,700

This can also be written as 22 x 31 x 52 x 72 x 6911 = 10,157,700

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


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