Q: What are the prime factors of the number 513,200,625?

 A: 3, 5, 7, 61, 641

Why are those the prime factors of the number 513,200,625?

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 513,200,625

513,200,625
Factor Arrows
3171,066,875
Factor Arrows
534,213,375
Factor Arrows
56,842,675
Factor Arrows
51,368,535
Factor Arrows
5273,707
Factor Arrows
739,101
Factor Arrows
61641

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:

3, 5, 7, 61, 641

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 5 x 5 x 7 x 61 x 641 = 513,200,625

This can also be written as 31 x 54 x 71 x 611 x 6411 = 513,200,625

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


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