Q: What are the prime factors of the number 10,221,000?

 A: 2, 3, 5, 3407

Why are those the prime factors of the number 10,221,000?

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 10,221,000

10,221,000
Factor Arrows
25,110,500
Factor Arrows
22,555,250
Factor Arrows
21,277,625
Factor Arrows
3425,875
Factor Arrows
585,175
Factor Arrows
517,035
Factor Arrows
53,407

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, 3407

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 5 x 3,407 = 10,221,000

This can also be written as 23 x 31 x 53 x 3,4071 = 10,221,000

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


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