Q: What are the prime factors of the number 649,392?

 A: 2, 3, 83, 163

Why are those the prime factors of the number 649,392?

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 649,392

649,392
Factor Arrows
2324,696
Factor Arrows
2162,348
Factor Arrows
281,174
Factor Arrows
240,587
Factor Arrows
313,529
Factor Arrows
83163

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, 83, 163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 83 x 163 = 649,392

This can also be written as 24 x 31 x 831 x 1631 = 649,392

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


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