Q: What are the prime factors of the number 203,537,740?

 A: 2, 5, 7, 37, 39293

Why are those the prime factors of the number 203,537,740?

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 203,537,740

203,537,740
Factor Arrows
2101,768,870
Factor Arrows
250,884,435
Factor Arrows
510,176,887
Factor Arrows
71,453,841
Factor Arrows
3739,293

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, 37, 39293

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 37 x 39,293 = 203,537,740

This can also be written as 22 x 51 x 71 x 371 x 39,2931 = 203,537,740

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


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