Q: What are the prime factors of the number 603,406,400?

 A: 2, 5, 377129

Why are those the prime factors of the number 603,406,400?

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 603,406,400

603,406,400
Factor Arrows
2301,703,200
Factor Arrows
2150,851,600
Factor Arrows
275,425,800
Factor Arrows
237,712,900
Factor Arrows
218,856,450
Factor Arrows
29,428,225
Factor Arrows
51,885,645
Factor Arrows
5377,129

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, 377129

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 5 x 5 x 377,129 = 603,406,400

This can also be written as 26 x 52 x 377,1291 = 603,406,400

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


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