Q: What are the prime factors of the number 523,415,200?

 A: 2, 5, 7, 11, 29, 293

Why are those the prime factors of the number 523,415,200?

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 523,415,200

523,415,200
Factor Arrows
2261,707,600
Factor Arrows
2130,853,800
Factor Arrows
265,426,900
Factor Arrows
232,713,450
Factor Arrows
216,356,725
Factor Arrows
53,271,345
Factor Arrows
5654,269
Factor Arrows
793,467
Factor Arrows
118,497
Factor Arrows
29293

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, 7, 11, 29, 293

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 7 x 11 x 29 x 293 = 523,415,200

This can also be written as 25 x 52 x 71 x 111 x 291 x 2931 = 523,415,200

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


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