Q: What are the prime factors of the number 487,642,500?

 A: 2, 3, 5, 21673

Why are those the prime factors of the number 487,642,500?

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 487,642,500

487,642,500
Factor Arrows
2243,821,250
Factor Arrows
2121,910,625
Factor Arrows
340,636,875
Factor Arrows
313,545,625
Factor Arrows
52,709,125
Factor Arrows
5541,825
Factor Arrows
5108,365
Factor Arrows
521,673

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, 21673

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 5 x 5 x 5 x 21,673 = 487,642,500

This can also be written as 22 x 32 x 54 x 21,6731 = 487,642,500

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


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