Q: What are the prime factors of the number 644,522,750?

 A: 2, 5, 19, 47, 2887

Why are those the prime factors of the number 644,522,750?

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 644,522,750

644,522,750
Factor Arrows
2322,261,375
Factor Arrows
564,452,275
Factor Arrows
512,890,455
Factor Arrows
52,578,091
Factor Arrows
19135,689
Factor Arrows
472,887

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, 19, 47, 2887

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 5 x 19 x 47 x 2,887 = 644,522,750

This can also be written as 21 x 53 x 191 x 471 x 2,8871 = 644,522,750

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


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