Q: What are the prime factors of the number 9,786,420?

 A: 2, 3, 5, 7, 863

Why are those the prime factors of the number 9,786,420?

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 9,786,420

9,786,420
Factor Arrows
24,893,210
Factor Arrows
22,446,605
Factor Arrows
3815,535
Factor Arrows
3271,845
Factor Arrows
390,615
Factor Arrows
330,205
Factor Arrows
56,041
Factor Arrows
7863

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, 863

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 5 x 7 x 863 = 9,786,420

This can also be written as 22 x 34 x 51 x 71 x 8631 = 9,786,420

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


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