Q: What are the prime factors of the number 165,101,776?

 A: 2, 7, 251, 839

Why are those the prime factors of the number 165,101,776?

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 165,101,776

165,101,776
Factor Arrows
282,550,888
Factor Arrows
241,275,444
Factor Arrows
220,637,722
Factor Arrows
210,318,861
Factor Arrows
71,474,123
Factor Arrows
7210,589
Factor Arrows
251839

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, 7, 251, 839

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 7 x 7 x 251 x 839 = 165,101,776

This can also be written as 24 x 72 x 2511 x 8391 = 165,101,776

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


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