Q: What are the prime factors of the number 207,145,536?

 A: 2, 3, 13, 37, 2243

Why are those the prime factors of the number 207,145,536?

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 207,145,536

207,145,536
Factor Arrows
2103,572,768
Factor Arrows
251,786,384
Factor Arrows
225,893,192
Factor Arrows
212,946,596
Factor Arrows
26,473,298
Factor Arrows
23,236,649
Factor Arrows
31,078,883
Factor Arrows
1382,991
Factor Arrows
372,243

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, 3, 13, 37, 2243

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 3 x 13 x 37 x 2,243 = 207,145,536

This can also be written as 26 x 31 x 131 x 371 x 2,2431 = 207,145,536

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


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