Q: What are the prime factors of the number 201,210,200?

 A: 2, 5, 521, 1931

Why are those the prime factors of the number 201,210,200?

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 201,210,200

201,210,200
Factor Arrows
2100,605,100
Factor Arrows
250,302,550
Factor Arrows
225,151,275
Factor Arrows
55,030,255
Factor Arrows
51,006,051
Factor Arrows
5211,931

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, 5, 521, 1931

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 521 x 1,931 = 201,210,200

This can also be written as 23 x 52 x 5211 x 1,9311 = 201,210,200

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


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