Q: What are the prime factors of the number 1,853,488?

 A: 2, 7, 13, 19, 67

Why are those the prime factors of the number 1,853,488?

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 1,853,488

1,853,488
Factor Arrows
2926,744
Factor Arrows
2463,372
Factor Arrows
2231,686
Factor Arrows
2115,843
Factor Arrows
716,549
Factor Arrows
131,273
Factor Arrows
1967

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, 7, 13, 19, 67

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 13 x 19 x 67 = 1,853,488

This can also be written as 24 x 71 x 131 x 191 x 671 = 1,853,488

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


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