Q: What are the prime factors of the number 1,851,744?

 A: 2, 3, 19289

Why are those the prime factors of the number 1,851,744?

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 1,851,744

1,851,744
Factor Arrows
2925,872
Factor Arrows
2462,936
Factor Arrows
2231,468
Factor Arrows
2115,734
Factor Arrows
257,867
Factor Arrows
319,289

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, 19289

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 19,289 = 1,851,744

This can also be written as 25 x 31 x 19,2891 = 1,851,744

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


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