Q: What are the prime factors of the number 400,104?

 A: 2, 3, 5557

Why are those the prime factors of the number 400,104?

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 400,104

400,104
Factor Arrows
2200,052
Factor Arrows
2100,026
Factor Arrows
250,013
Factor Arrows
316,671
Factor Arrows
35,557

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, 5557

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5,557 = 400,104

This can also be written as 23 x 32 x 5,5571 = 400,104

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


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