Q: What are the prime factors of the number 202,122,000?

 A: 2, 3, 5, 19, 197

Why are those the prime factors of the number 202,122,000?

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 202,122,000

202,122,000
Factor Arrows
2101,061,000
Factor Arrows
250,530,500
Factor Arrows
225,265,250
Factor Arrows
212,632,625
Factor Arrows
34,210,875
Factor Arrows
31,403,625
Factor Arrows
3467,875
Factor Arrows
593,575
Factor Arrows
518,715
Factor Arrows
53,743
Factor Arrows
19197

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, 19, 197

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 5 x 5 x 19 x 197 = 202,122,000

This can also be written as 24 x 33 x 53 x 191 x 1971 = 202,122,000

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


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