Q: What are the prime factors of the number 40,598,220?

 A: 2, 3, 5, 13, 23, 31, 73

Why are those the prime factors of the number 40,598,220?

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 40,598,220

40,598,220
Factor Arrows
220,299,110
Factor Arrows
210,149,555
Factor Arrows
33,383,185
Factor Arrows
5676,637
Factor Arrows
1352,049
Factor Arrows
232,263
Factor Arrows
3173

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, 5, 13, 23, 31, 73

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 13 x 23 x 31 x 73 = 40,598,220

This can also be written as 22 x 31 x 51 x 131 x 231 x 311 x 731 = 40,598,220

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


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