Q: What are the prime factors of the number 162,676,400?

 A: 2, 5, 17, 47, 509

Why are those the prime factors of the number 162,676,400?

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 162,676,400

162,676,400
Factor Arrows
281,338,200
Factor Arrows
240,669,100
Factor Arrows
220,334,550
Factor Arrows
210,167,275
Factor Arrows
52,033,455
Factor Arrows
5406,691
Factor Arrows
1723,923
Factor Arrows
47509

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, 5, 17, 47, 509

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 5 x 17 x 47 x 509 = 162,676,400

This can also be written as 24 x 52 x 171 x 471 x 5091 = 162,676,400

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


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