Q: What are the prime factors of the number 159,705,208?

 A: 2, 13, 17, 103, 877

Why are those the prime factors of the number 159,705,208?

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 159,705,208

159,705,208
Factor Arrows
279,852,604
Factor Arrows
239,926,302
Factor Arrows
219,963,151
Factor Arrows
131,535,627
Factor Arrows
1790,331
Factor Arrows
103877

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, 13, 17, 103, 877

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 13 x 17 x 103 x 877 = 159,705,208

This can also be written as 23 x 131 x 171 x 1031 x 8771 = 159,705,208

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


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