Q: What are the prime factors of the number 900,312?

 A: 2, 3, 7, 23, 233

Why are those the prime factors of the number 900,312?

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 900,312

900,312
Factor Arrows
2450,156
Factor Arrows
2225,078
Factor Arrows
2112,539
Factor Arrows
337,513
Factor Arrows
75,359
Factor Arrows
23233

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, 7, 23, 233

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 23 x 233 = 900,312

This can also be written as 23 x 31 x 71 x 231 x 2331 = 900,312

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


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