Q: What are the prime factors of the number 402,414,128?

 A: 2, 3011, 8353

Why are those the prime factors of the number 402,414,128?

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 402,414,128

402,414,128
Factor Arrows
2201,207,064
Factor Arrows
2100,603,532
Factor Arrows
250,301,766
Factor Arrows
225,150,883
Factor Arrows
3,0118,353

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, 3011, 8353

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3,011 x 8,353 = 402,414,128

This can also be written as 24 x 3,0111 x 8,3531 = 402,414,128

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


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