Q: What are the prime factors of the number 332,155,328?

 A: 2, 23, 29, 31, 251

Why are those the prime factors of the number 332,155,328?

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 332,155,328

332,155,328
Factor Arrows
2166,077,664
Factor Arrows
283,038,832
Factor Arrows
241,519,416
Factor Arrows
220,759,708
Factor Arrows
210,379,854
Factor Arrows
25,189,927
Factor Arrows
23225,649
Factor Arrows
297,781
Factor Arrows
31251

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, 23, 29, 31, 251

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 23 x 29 x 31 x 251 = 332,155,328

This can also be written as 26 x 231 x 291 x 311 x 2511 = 332,155,328

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


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