Q: What are the prime factors of the number 338,349,555?

 A: 3, 5, 17, 16381

Why are those the prime factors of the number 338,349,555?

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 338,349,555

338,349,555
Factor Arrows
3112,783,185
Factor Arrows
337,594,395
Factor Arrows
312,531,465
Factor Arrows
34,177,155
Factor Arrows
31,392,385
Factor Arrows
5278,477
Factor Arrows
1716,381

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, 17, 16381

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 5 x 17 x 16,381 = 338,349,555

This can also be written as 35 x 51 x 171 x 16,3811 = 338,349,555

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


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