Q: What are the prime factors of the number 75,287,472?

 A: 2, 3, 13, 9281

Why are those the prime factors of the number 75,287,472?

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 75,287,472

75,287,472
Factor Arrows
237,643,736
Factor Arrows
218,821,868
Factor Arrows
29,410,934
Factor Arrows
24,705,467
Factor Arrows
31,568,489
Factor Arrows
13120,653
Factor Arrows
139,281

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, 13, 9281

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 13 x 13 x 9,281 = 75,287,472

This can also be written as 24 x 31 x 132 x 9,2811 = 75,287,472

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


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