Q: What are the prime factors of the number 138,171,510?

 A: 2, 3, 5, 59, 26021

Why are those the prime factors of the number 138,171,510?

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 138,171,510

138,171,510
Factor Arrows
269,085,755
Factor Arrows
323,028,585
Factor Arrows
37,676,195
Factor Arrows
51,535,239
Factor Arrows
5926,021

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, 59, 26021

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 59 x 26,021 = 138,171,510

This can also be written as 21 x 32 x 51 x 591 x 26,0211 = 138,171,510

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


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