Q: What are the prime factors of the number 411,123,200?

 A: 2, 5, 32119

Why are those the prime factors of the number 411,123,200?

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 411,123,200

411,123,200
Factor Arrows
2205,561,600
Factor Arrows
2102,780,800
Factor Arrows
251,390,400
Factor Arrows
225,695,200
Factor Arrows
212,847,600
Factor Arrows
26,423,800
Factor Arrows
23,211,900
Factor Arrows
21,605,950
Factor Arrows
2802,975
Factor Arrows
5160,595
Factor Arrows
532,119

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, 32119

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 5 x 32,119 = 411,123,200

This can also be written as 29 x 52 x 32,1191 = 411,123,200

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


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