Q: What are the prime factors of the number 203,330,302?

 A: 2, 7, 17, 31, 127

Why are those the prime factors of the number 203,330,302?

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 203,330,302

203,330,302
Factor Arrows
2101,665,151
Factor Arrows
714,523,593
Factor Arrows
72,074,799
Factor Arrows
17122,047
Factor Arrows
313,937
Factor Arrows
31127

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, 17, 31, 127

We can check our work by multiplying all of the prime factors together: 2 x 7 x 7 x 17 x 31 x 31 x 127 = 203,330,302

This can also be written as 21 x 72 x 171 x 312 x 1271 = 203,330,302

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


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