Q: What are the prime factors of the number 40,364,415?

 A: 3, 5, 7, 13, 9857

Why are those the prime factors of the number 40,364,415?

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 40,364,415

40,364,415
Factor Arrows
313,454,805
Factor Arrows
34,484,935
Factor Arrows
5896,987
Factor Arrows
7128,141
Factor Arrows
139,857

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, 5, 7, 13, 9857

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 7 x 13 x 9,857 = 40,364,415

This can also be written as 32 x 51 x 71 x 131 x 9,8571 = 40,364,415

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


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