Q: What are the prime factors of the number 404,602,768?

 A: 2, 101, 109, 2297

Why are those the prime factors of the number 404,602,768?

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 404,602,768

404,602,768
Factor Arrows
2202,301,384
Factor Arrows
2101,150,692
Factor Arrows
250,575,346
Factor Arrows
225,287,673
Factor Arrows
101250,373
Factor Arrows
1092,297

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, 101, 109, 2297

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 101 x 109 x 2,297 = 404,602,768

This can also be written as 24 x 1011 x 1091 x 2,2971 = 404,602,768

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


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