Q: What are the prime factors of the number 1,445,769?

 A: 3, 13, 1373

Why are those the prime factors of the number 1,445,769?

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 1,445,769

1,445,769
Factor Arrows
3481,923
Factor Arrows
3160,641
Factor Arrows
353,547
Factor Arrows
317,849
Factor Arrows
131,373

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:

3, 13, 1373

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 13 x 1,373 = 1,445,769

This can also be written as 34 x 131 x 1,3731 = 1,445,769

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


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