Q: What are the prime factors of the number 903,602?

 A: 2, 7, 19, 43, 79

Why are those the prime factors of the number 903,602?

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 903,602

903,602
Factor Arrows
2451,801
Factor Arrows
764,543
Factor Arrows
193,397
Factor Arrows
4379

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, 19, 43, 79

We can check our work by multiplying all of the prime factors together: 2 x 7 x 19 x 43 x 79 = 903,602

This can also be written as 21 x 71 x 191 x 431 x 791 = 903,602

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


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