Q: What are the prime factors of the number 100,321,648?

 A: 2, 7, 895729

Why are those the prime factors of the number 100,321,648?

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 100,321,648

100,321,648
Factor Arrows
250,160,824
Factor Arrows
225,080,412
Factor Arrows
212,540,206
Factor Arrows
26,270,103
Factor Arrows
7895,729

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, 7, 895729

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 895,729 = 100,321,648

This can also be written as 24 x 71 x 895,7291 = 100,321,648

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


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