Q: What are the prime factors of the number 903,854?

 A: 2, 7, 23, 401

Why are those the prime factors of the number 903,854?

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 903,854

903,854
Factor Arrows
2451,927
Factor Arrows
764,561
Factor Arrows
79,223
Factor Arrows
23401

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, 7, 23, 401

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 23 x 401 = 903,854

This can also be written as 21 x 72 x 231 x 4011 = 903,854

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


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