Q: What are the prime factors of the number 72,868,950?

 A: 2, 3, 5, 7, 11, 701

Why are those the prime factors of the number 72,868,950?

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 72,868,950

72,868,950
Factor Arrows
236,434,475
Factor Arrows
312,144,825
Factor Arrows
34,048,275
Factor Arrows
31,349,425
Factor Arrows
5269,885
Factor Arrows
553,977
Factor Arrows
77,711
Factor Arrows
11701

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, 7, 11, 701

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 x 5 x 7 x 11 x 701 = 72,868,950

This can also be written as 21 x 33 x 52 x 71 x 111 x 7011 = 72,868,950

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


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