Q: What are the prime factors of the number 4,200,903?

 A: 3, 7, 31, 239

Why are those the prime factors of the number 4,200,903?

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 4,200,903

4,200,903
Factor Arrows
31,400,301
Factor Arrows
3466,767
Factor Arrows
3155,589
Factor Arrows
351,863
Factor Arrows
77,409
Factor Arrows
31239

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:

3, 7, 31, 239

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 7 x 31 x 239 = 4,200,903

This can also be written as 34 x 71 x 311 x 2391 = 4,200,903

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


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