Q: What are the prime factors of the number 40,314,321?

 A: 3, 29, 51487

Why are those the prime factors of the number 40,314,321?

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 40,314,321

40,314,321
Factor Arrows
313,438,107
Factor Arrows
34,479,369
Factor Arrows
31,493,123
Factor Arrows
2951,487

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:

3, 29, 51487

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 29 x 51,487 = 40,314,321

This can also be written as 33 x 291 x 51,4871 = 40,314,321

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


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