Q: What are the prime factors of the number 12,739,875?

 A: 3, 5, 53, 641

Why are those the prime factors of the number 12,739,875?

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 12,739,875

12,739,875
Factor Arrows
34,246,625
Factor Arrows
5849,325
Factor Arrows
5169,865
Factor Arrows
533,973
Factor Arrows
53641

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:

3, 5, 53, 641

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 5 x 53 x 641 = 12,739,875

This can also be written as 31 x 53 x 531 x 6411 = 12,739,875

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


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