Q: What are the prime factors of the number 6,443,360?

 A: 2, 5, 7, 11, 523

Why are those the prime factors of the number 6,443,360?

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 6,443,360

6,443,360
Factor Arrows
23,221,680
Factor Arrows
21,610,840
Factor Arrows
2805,420
Factor Arrows
2402,710
Factor Arrows
2201,355
Factor Arrows
540,271
Factor Arrows
75,753
Factor Arrows
11523

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, 7, 11, 523

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 7 x 11 x 523 = 6,443,360

This can also be written as 25 x 51 x 71 x 111 x 5231 = 6,443,360

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


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