Q: What are the prime factors of the number 164,211,408?

 A: 2, 3, 89, 4271

Why are those the prime factors of the number 164,211,408?

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 164,211,408

164,211,408
Factor Arrows
282,105,704
Factor Arrows
241,052,852
Factor Arrows
220,526,426
Factor Arrows
210,263,213
Factor Arrows
33,421,071
Factor Arrows
31,140,357
Factor Arrows
3380,119
Factor Arrows
894,271

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, 89, 4271

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 89 x 4,271 = 164,211,408

This can also be written as 24 x 33 x 891 x 4,2711 = 164,211,408

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


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