Q: What are the prime factors of the number 408,133,888?

 A: 2, 1594273

Why are those the prime factors of the number 408,133,888?

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 408,133,888

408,133,888
Factor Arrows
2204,066,944
Factor Arrows
2102,033,472
Factor Arrows
251,016,736
Factor Arrows
225,508,368
Factor Arrows
212,754,184
Factor Arrows
26,377,092
Factor Arrows
23,188,546
Factor Arrows
21,594,273

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, 1594273

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 1,594,273 = 408,133,888

This can also be written as 28 x 1,594,2731 = 408,133,888

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


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