Q: What are the prime factors of the number 636,125,600?

 A: 2, 5, 11, 72287

Why are those the prime factors of the number 636,125,600?

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 636,125,600

636,125,600
Factor Arrows
2318,062,800
Factor Arrows
2159,031,400
Factor Arrows
279,515,700
Factor Arrows
239,757,850
Factor Arrows
219,878,925
Factor Arrows
53,975,785
Factor Arrows
5795,157
Factor Arrows
1172,287

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, 11, 72287

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 11 x 72,287 = 636,125,600

This can also be written as 25 x 52 x 111 x 72,2871 = 636,125,600

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


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