Q: What are the prime factors of the number 164,403,168?

 A: 2, 3, 31, 55243

Why are those the prime factors of the number 164,403,168?

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 164,403,168

164,403,168
Factor Arrows
282,201,584
Factor Arrows
241,100,792
Factor Arrows
220,550,396
Factor Arrows
210,275,198
Factor Arrows
25,137,599
Factor Arrows
31,712,533
Factor Arrows
3155,243

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, 31, 55243

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 31 x 55,243 = 164,403,168

This can also be written as 25 x 31 x 311 x 55,2431 = 164,403,168

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


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