Q: What are the prime factors of the number 135,251,208?

 A: 2, 3, 208721

Why are those the prime factors of the number 135,251,208?

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 135,251,208

135,251,208
Factor Arrows
267,625,604
Factor Arrows
233,812,802
Factor Arrows
216,906,401
Factor Arrows
35,635,467
Factor Arrows
31,878,489
Factor Arrows
3626,163
Factor Arrows
3208,721

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, 208721

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 208,721 = 135,251,208

This can also be written as 23 x 34 x 208,7211 = 135,251,208

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


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