Q: What are the prime factors of the number 400,554,008?

 A: 2, 37, 1353223

Why are those the prime factors of the number 400,554,008?

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 400,554,008

400,554,008
Factor Arrows
2200,277,004
Factor Arrows
2100,138,502
Factor Arrows
250,069,251
Factor Arrows
371,353,223

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, 37, 1353223

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 37 x 1,353,223 = 400,554,008

This can also be written as 23 x 371 x 1,353,2231 = 400,554,008

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


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