Q: What are the prime factors of the number 39,205,000?

 A: 2, 5, 7841

Why are those the prime factors of the number 39,205,000?

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 39,205,000

39,205,000
Factor Arrows
219,602,500
Factor Arrows
29,801,250
Factor Arrows
24,900,625
Factor Arrows
5980,125
Factor Arrows
5196,025
Factor Arrows
539,205
Factor Arrows
57,841

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, 5, 7841

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 5 x 5 x 7,841 = 39,205,000

This can also be written as 23 x 54 x 7,8411 = 39,205,000

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


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