Q: What are the prime factors of the number 119,428,365?

 A: 3, 5, 7, 73, 15581

Why are those the prime factors of the number 119,428,365?

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 119,428,365

119,428,365
Factor Arrows
339,809,455
Factor Arrows
57,961,891
Factor Arrows
71,137,413
Factor Arrows
7315,581

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, 7, 73, 15581

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 73 x 15,581 = 119,428,365

This can also be written as 31 x 51 x 71 x 731 x 15,5811 = 119,428,365

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


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