Q: What are the prime factors of the number 40,338,486?

 A: 2, 3, 73, 379

Why are those the prime factors of the number 40,338,486?

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 40,338,486

40,338,486
Factor Arrows
220,169,243
Factor Arrows
36,723,081
Factor Arrows
32,241,027
Factor Arrows
3747,009
Factor Arrows
3249,003
Factor Arrows
383,001
Factor Arrows
327,667
Factor Arrows
73379

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, 73, 379

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 73 x 379 = 40,338,486

This can also be written as 21 x 36 x 731 x 3791 = 40,338,486

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


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