Q: What are the prime factors of the number 202,143,420?

 A: 2, 3, 5, 101, 11119

Why are those the prime factors of the number 202,143,420?

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 202,143,420

202,143,420
Factor Arrows
2101,071,710
Factor Arrows
250,535,855
Factor Arrows
316,845,285
Factor Arrows
35,615,095
Factor Arrows
51,123,019
Factor Arrows
10111,119

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, 5, 101, 11119

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 101 x 11,119 = 202,143,420

This can also be written as 22 x 32 x 51 x 1011 x 11,1191 = 202,143,420

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


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