Q: What are the prime factors of the number 161,633,904?

 A: 2, 3, 43, 78311

Why are those the prime factors of the number 161,633,904?

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 161,633,904

161,633,904
Factor Arrows
280,816,952
Factor Arrows
240,408,476
Factor Arrows
220,204,238
Factor Arrows
210,102,119
Factor Arrows
33,367,373
Factor Arrows
4378,311

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, 3, 43, 78311

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 43 x 78,311 = 161,633,904

This can also be written as 24 x 31 x 431 x 78,3111 = 161,633,904

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


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