Q: What are the prime factors of the number 3,921,150?

 A: 2, 3, 5, 26141

Why are those the prime factors of the number 3,921,150?

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 3,921,150

3,921,150
Factor Arrows
21,960,575
Factor Arrows
3653,525
Factor Arrows
5130,705
Factor Arrows
526,141

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, 5, 26141

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 26,141 = 3,921,150

This can also be written as 21 x 31 x 52 x 26,1411 = 3,921,150

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


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