Q: What are the prime factors of the number 2,100,276?

 A: 2, 3, 19447

Why are those the prime factors of the number 2,100,276?

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 2,100,276

2,100,276
Factor Arrows
21,050,138
Factor Arrows
2525,069
Factor Arrows
3175,023
Factor Arrows
358,341
Factor Arrows
319,447

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, 19447

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 19,447 = 2,100,276

This can also be written as 22 x 33 x 19,4471 = 2,100,276

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


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