Q: What are the prime factors of the number 40,421,344?

 A: 2, 607, 2081

Why are those the prime factors of the number 40,421,344?

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 40,421,344

40,421,344
Factor Arrows
220,210,672
Factor Arrows
210,105,336
Factor Arrows
25,052,668
Factor Arrows
22,526,334
Factor Arrows
21,263,167
Factor Arrows
6072,081

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, 607, 2081

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 607 x 2,081 = 40,421,344

This can also be written as 25 x 6071 x 2,0811 = 40,421,344

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


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