Q: What are the prime factors of the number 404,424,042?

 A: 2, 3, 11, 23, 263, 1013

Why are those the prime factors of the number 404,424,042?

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 404,424,042

404,424,042
Factor Arrows
2202,212,021
Factor Arrows
367,404,007
Factor Arrows
116,127,637
Factor Arrows
23266,419
Factor Arrows
2631,013

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, 3, 11, 23, 263, 1013

We can check our work by multiplying all of the prime factors together: 2 x 3 x 11 x 23 x 263 x 1,013 = 404,424,042

This can also be written as 21 x 31 x 111 x 231 x 2631 x 1,0131 = 404,424,042

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


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