Q: What are the prime factors of the number 43,266,240?

 A: 2, 3, 5, 83, 181

Why are those the prime factors of the number 43,266,240?

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 43,266,240

43,266,240
Factor Arrows
221,633,120
Factor Arrows
210,816,560
Factor Arrows
25,408,280
Factor Arrows
22,704,140
Factor Arrows
21,352,070
Factor Arrows
2676,035
Factor Arrows
3225,345
Factor Arrows
375,115
Factor Arrows
515,023
Factor Arrows
83181

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, 83, 181

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 3 x 3 x 5 x 83 x 181 = 43,266,240

This can also be written as 26 x 32 x 51 x 831 x 1811 = 43,266,240

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


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