Q: What are the prime factors of the number 166,186,776?

 A: 2, 3, 7, 23, 41, 1049

Why are those the prime factors of the number 166,186,776?

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 166,186,776

166,186,776
Factor Arrows
283,093,388
Factor Arrows
241,546,694
Factor Arrows
220,773,347
Factor Arrows
36,924,449
Factor Arrows
7989,207
Factor Arrows
2343,009
Factor Arrows
411,049

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, 7, 23, 41, 1049

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 23 x 41 x 1,049 = 166,186,776

This can also be written as 23 x 31 x 71 x 231 x 411 x 1,0491 = 166,186,776

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


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