Q: What are the prime factors of the number 49,745,155?

 A: 5, 67, 163, 911

Why are those the prime factors of the number 49,745,155?

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 49,745,155

49,745,155
Factor Arrows
59,949,031
Factor Arrows
67148,493
Factor Arrows
163911

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:

5, 67, 163, 911

We can check our work by multiplying all of the prime factors together: 5 x 67 x 163 x 911 = 49,745,155

This can also be written as 51 x 671 x 1631 x 9111 = 49,745,155

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


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