Q: What are the prime factors of the number 2,800,974?

 A: 2, 3, 11, 31, 37

Why are those the prime factors of the number 2,800,974?

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 2,800,974

2,800,974
Factor Arrows
21,400,487
Factor Arrows
3466,829
Factor Arrows
1142,439
Factor Arrows
311,369
Factor Arrows
3737

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, 11, 31, 37

We can check our work by multiplying all of the prime factors together: 2 x 3 x 11 x 31 x 37 x 37 = 2,800,974

This can also be written as 21 x 31 x 111 x 311 x 372 = 2,800,974

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


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