Q: What are the prime factors of the number 404,044,128?

 A: 2, 3, 23, 181, 337

Why are those the prime factors of the number 404,044,128?

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 404,044,128

404,044,128
Factor Arrows
2202,022,064
Factor Arrows
2101,011,032
Factor Arrows
250,505,516
Factor Arrows
225,252,758
Factor Arrows
212,626,379
Factor Arrows
34,208,793
Factor Arrows
31,402,931
Factor Arrows
2360,997
Factor Arrows
181337

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, 23, 181, 337

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 23 x 181 x 337 = 404,044,128

This can also be written as 25 x 32 x 231 x 1811 x 3371 = 404,044,128

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


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