Q: What are the prime factors of the number 581,634,640?

 A: 2, 5, 1987, 3659

Why are those the prime factors of the number 581,634,640?

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 581,634,640

581,634,640
Factor Arrows
2290,817,320
Factor Arrows
2145,408,660
Factor Arrows
272,704,330
Factor Arrows
236,352,165
Factor Arrows
57,270,433
Factor Arrows
1,9873,659

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, 1987, 3659

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 1,987 x 3,659 = 581,634,640

This can also be written as 24 x 51 x 1,9871 x 3,6591 = 581,634,640

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


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