Q: What are the prime factors of the number 916,900?

 A: 2, 5, 53, 173

Why are those the prime factors of the number 916,900?

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 916,900

916,900
Factor Arrows
2458,450
Factor Arrows
2229,225
Factor Arrows
545,845
Factor Arrows
59,169
Factor Arrows
53173

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, 53, 173

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 53 x 173 = 916,900

This can also be written as 22 x 52 x 531 x 1731 = 916,900

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


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