Q: What are the prime factors of the number 647,324,040?

 A: 2, 3, 5, 11, 71, 6907

Why are those the prime factors of the number 647,324,040?

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 647,324,040

647,324,040
Factor Arrows
2323,662,020
Factor Arrows
2161,831,010
Factor Arrows
280,915,505
Factor Arrows
326,971,835
Factor Arrows
55,394,367
Factor Arrows
11490,397
Factor Arrows
716,907

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, 11, 71, 6907

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 11 x 71 x 6,907 = 647,324,040

This can also be written as 23 x 31 x 51 x 111 x 711 x 6,9071 = 647,324,040

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


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