Q: What are the prime factors of the number 899,360?

 A: 2, 5, 7, 11, 73

Why are those the prime factors of the number 899,360?

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 899,360

899,360
Factor Arrows
2449,680
Factor Arrows
2224,840
Factor Arrows
2112,420
Factor Arrows
256,210
Factor Arrows
228,105
Factor Arrows
55,621
Factor Arrows
7803
Factor Arrows
1173

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, 5, 7, 11, 73

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 7 x 11 x 73 = 899,360

This can also be written as 25 x 51 x 71 x 111 x 731 = 899,360

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


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