Q: What are the prime factors of the number 1,913,728?

 A: 2, 14951

Why are those the prime factors of the number 1,913,728?

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 1,913,728

1,913,728
Factor Arrows
2956,864
Factor Arrows
2478,432
Factor Arrows
2239,216
Factor Arrows
2119,608
Factor Arrows
259,804
Factor Arrows
229,902
Factor Arrows
214,951

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, 14951

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 14,951 = 1,913,728

This can also be written as 27 x 14,9511 = 1,913,728

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


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