Q: What are the prime factors of the number 137,651,040?

 A: 2, 3, 5, 17, 5623

Why are those the prime factors of the number 137,651,040?

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 137,651,040

137,651,040
Factor Arrows
268,825,520
Factor Arrows
234,412,760
Factor Arrows
217,206,380
Factor Arrows
28,603,190
Factor Arrows
24,301,595
Factor Arrows
31,433,865
Factor Arrows
3477,955
Factor Arrows
595,591
Factor Arrows
175,623

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, 17, 5623

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 17 x 5,623 = 137,651,040

This can also be written as 25 x 32 x 51 x 171 x 5,6231 = 137,651,040

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


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