Q: What are the prime factors of the number 649,360?

 A: 2, 5, 8117

Why are those the prime factors of the number 649,360?

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 649,360

649,360
Factor Arrows
2324,680
Factor Arrows
2162,340
Factor Arrows
281,170
Factor Arrows
240,585
Factor Arrows
58,117

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, 5, 8117

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 8,117 = 649,360

This can also be written as 24 x 51 x 8,1171 = 649,360

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


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