Q: What are the prime factors of the number 202,361,320?

 A: 2, 5, 7, 47, 15377

Why are those the prime factors of the number 202,361,320?

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 202,361,320

202,361,320
Factor Arrows
2101,180,660
Factor Arrows
250,590,330
Factor Arrows
225,295,165
Factor Arrows
55,059,033
Factor Arrows
7722,719
Factor Arrows
4715,377

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, 7, 47, 15377

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7 x 47 x 15,377 = 202,361,320

This can also be written as 23 x 51 x 71 x 471 x 15,3771 = 202,361,320

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


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