Q: What are the prime factors of the number 64,428?

 A: 2, 3, 7, 13, 59

Why are those the prime factors of the number 64,428?

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 64,428

64,428
Factor Arrows
232,214
Factor Arrows
216,107
Factor Arrows
35,369
Factor Arrows
7767
Factor Arrows
1359

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, 13, 59

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 7 x 13 x 59 = 64,428

This can also be written as 22 x 31 x 71 x 131 x 591 = 64,428

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


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