Q: What are the prime factors of the number 135,436,665?

 A: 3, 5, 7, 13, 313, 317

Why are those the prime factors of the number 135,436,665?

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 135,436,665

135,436,665
Factor Arrows
345,145,555
Factor Arrows
59,029,111
Factor Arrows
71,289,873
Factor Arrows
1399,221
Factor Arrows
313317

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:

3, 5, 7, 13, 313, 317

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 13 x 313 x 317 = 135,436,665

This can also be written as 31 x 51 x 71 x 131 x 3131 x 3171 = 135,436,665

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


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