Q: What are the prime factors of the number 361,645,317?

 A: 3, 11, 349, 1163

Why are those the prime factors of the number 361,645,317?

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 361,645,317

361,645,317
Factor Arrows
3120,548,439
Factor Arrows
340,182,813
Factor Arrows
313,394,271
Factor Arrows
34,464,757
Factor Arrows
11405,887
Factor Arrows
3491,163

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, 11, 349, 1163

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 11 x 349 x 1,163 = 361,645,317

This can also be written as 34 x 111 x 3491 x 1,1631 = 361,645,317

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


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