Q: What are the prime factors of the number 625,362,850?

 A: 2, 5, 7, 17, 61, 1723

Why are those the prime factors of the number 625,362,850?

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 625,362,850

625,362,850
Factor Arrows
2312,681,425
Factor Arrows
562,536,285
Factor Arrows
512,507,257
Factor Arrows
71,786,751
Factor Arrows
17105,103
Factor Arrows
611,723

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, 5, 7, 17, 61, 1723

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 7 x 17 x 61 x 1,723 = 625,362,850

This can also be written as 21 x 52 x 71 x 171 x 611 x 1,7231 = 625,362,850

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


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