Q: What are the prime factors of the number 403,042,018?

 A: 2, 17, 23, 89, 5791

Why are those the prime factors of the number 403,042,018?

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 403,042,018

403,042,018
Factor Arrows
2201,521,009
Factor Arrows
1711,854,177
Factor Arrows
23515,399
Factor Arrows
895,791

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, 17, 23, 89, 5791

We can check our work by multiplying all of the prime factors together: 2 x 17 x 23 x 89 x 5,791 = 403,042,018

This can also be written as 21 x 171 x 231 x 891 x 5,7911 = 403,042,018

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


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