Q: What are the prime factors of the number 2,358,972?

 A: 2, 3, 7, 11, 23, 37

Why are those the prime factors of the number 2,358,972?

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 2,358,972

2,358,972
Factor Arrows
21,179,486
Factor Arrows
2589,743
Factor Arrows
3196,581
Factor Arrows
365,527
Factor Arrows
79,361
Factor Arrows
11851
Factor Arrows
2337

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, 7, 11, 23, 37

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 7 x 11 x 23 x 37 = 2,358,972

This can also be written as 22 x 32 x 71 x 111 x 231 x 371 = 2,358,972

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


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