Q: What are the prime factors of the number 3,929,436?

 A: 2, 3, 7, 31, 503

Why are those the prime factors of the number 3,929,436?

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 3,929,436

3,929,436
Factor Arrows
21,964,718
Factor Arrows
2982,359
Factor Arrows
3327,453
Factor Arrows
3109,151
Factor Arrows
715,593
Factor Arrows
31503

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, 7, 31, 503

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 7 x 31 x 503 = 3,929,436

This can also be written as 22 x 32 x 71 x 311 x 5031 = 3,929,436

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


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