Q: What are the prime factors of the number 3,615,872?

 A: 2, 13, 41, 53

Why are those the prime factors of the number 3,615,872?

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 3,615,872

3,615,872
Factor Arrows
21,807,936
Factor Arrows
2903,968
Factor Arrows
2451,984
Factor Arrows
2225,992
Factor Arrows
2112,996
Factor Arrows
256,498
Factor Arrows
228,249
Factor Arrows
132,173
Factor Arrows
4153

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, 13, 41, 53

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 2 x 13 x 41 x 53 = 3,615,872

This can also be written as 27 x 131 x 411 x 531 = 3,615,872

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


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