Q: What are the prime factors of the number 203,124,040?

 A: 2, 5, 7, 23, 31541

Why are those the prime factors of the number 203,124,040?

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 203,124,040

203,124,040
Factor Arrows
2101,562,020
Factor Arrows
250,781,010
Factor Arrows
225,390,505
Factor Arrows
55,078,101
Factor Arrows
7725,443
Factor Arrows
2331,541

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, 23, 31541

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 7 x 23 x 31,541 = 203,124,040

This can also be written as 23 x 51 x 71 x 231 x 31,5411 = 203,124,040

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


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