Q: What are the prime factors of the number 43,487,388?

 A: 2, 3, 7, 23, 41, 61

Why are those the prime factors of the number 43,487,388?

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 43,487,388

43,487,388
Factor Arrows
221,743,694
Factor Arrows
210,871,847
Factor Arrows
33,623,949
Factor Arrows
31,207,983
Factor Arrows
3402,661
Factor Arrows
757,523
Factor Arrows
232,501
Factor Arrows
4161

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, 23, 41, 61

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 7 x 23 x 41 x 61 = 43,487,388

This can also be written as 22 x 33 x 71 x 231 x 411 x 611 = 43,487,388

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


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