Q: What are the prime factors of the number 181,399,826?

 A: 2, 17, 37, 41, 3517

Why are those the prime factors of the number 181,399,826?

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 181,399,826

181,399,826
Factor Arrows
290,699,913
Factor Arrows
175,335,289
Factor Arrows
37144,197
Factor Arrows
413,517

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, 17, 37, 41, 3517

We can check our work by multiplying all of the prime factors together: 2 x 17 x 37 x 41 x 3,517 = 181,399,826

This can also be written as 21 x 171 x 371 x 411 x 3,5171 = 181,399,826

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


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