Q: What are the prime factors of the number 63,401,520?

 A: 2, 3, 5, 7, 13, 2903

Why are those the prime factors of the number 63,401,520?

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 63,401,520

63,401,520
Factor Arrows
231,700,760
Factor Arrows
215,850,380
Factor Arrows
27,925,190
Factor Arrows
23,962,595
Factor Arrows
31,320,865
Factor Arrows
5264,173
Factor Arrows
737,739
Factor Arrows
132,903

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, 7, 13, 2903

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 7 x 13 x 2,903 = 63,401,520

This can also be written as 24 x 31 x 51 x 71 x 131 x 2,9031 = 63,401,520

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


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