Q: What are the prime factors of the number 625,470,647?

 A: 17, 43, 97, 8821

Why are those the prime factors of the number 625,470,647?

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 625,470,647

625,470,647
Factor Arrows
1736,792,391
Factor Arrows
43855,637
Factor Arrows
978,821

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:

17, 43, 97, 8821

We can check our work by multiplying all of the prime factors together: 17 x 43 x 97 x 8,821 = 625,470,647

This can also be written as 171 x 431 x 971 x 8,8211 = 625,470,647

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


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