Q: What are the prime factors of the number 646,475,250?

 A: 2, 3, 5, 29, 29723

Why are those the prime factors of the number 646,475,250?

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 646,475,250

646,475,250
Factor Arrows
2323,237,625
Factor Arrows
3107,745,875
Factor Arrows
521,549,175
Factor Arrows
54,309,835
Factor Arrows
5861,967
Factor Arrows
2929,723

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, 3, 5, 29, 29723

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 5 x 29 x 29,723 = 646,475,250

This can also be written as 21 x 31 x 53 x 291 x 29,7231 = 646,475,250

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


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