Q: What are the prime factors of the number 2,639,630?

 A: 2, 5, 7, 5387

Why are those the prime factors of the number 2,639,630?

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 2,639,630

2,639,630
Factor Arrows
21,319,815
Factor Arrows
5263,963
Factor Arrows
737,709
Factor Arrows
75,387

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, 5, 7, 5387

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 7 x 5,387 = 2,639,630

This can also be written as 21 x 51 x 72 x 5,3871 = 2,639,630

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


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