Q: What are the prime factors of the number 40,434,345?

 A: 3, 5, 7, 23, 5581

Why are those the prime factors of the number 40,434,345?

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 40,434,345

40,434,345
Factor Arrows
313,478,115
Factor Arrows
34,492,705
Factor Arrows
5898,541
Factor Arrows
7128,363
Factor Arrows
235,581

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, 23, 5581

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 7 x 23 x 5,581 = 40,434,345

This can also be written as 32 x 51 x 71 x 231 x 5,5811 = 40,434,345

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


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