Q: What are the prime factors of the number 39,507,555?

 A: 3, 5, 19, 67, 2069

Why are those the prime factors of the number 39,507,555?

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 39,507,555

39,507,555
Factor Arrows
313,169,185
Factor Arrows
52,633,837
Factor Arrows
19138,623
Factor Arrows
672,069

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, 19, 67, 2069

We can check our work by multiplying all of the prime factors together: 3 x 5 x 19 x 67 x 2,069 = 39,507,555

This can also be written as 31 x 51 x 191 x 671 x 2,0691 = 39,507,555

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


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