Q: What are the prime factors of the number 3,949,380?

 A: 2, 3, 5, 37, 593

Why are those the prime factors of the number 3,949,380?

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 3,949,380

3,949,380
Factor Arrows
21,974,690
Factor Arrows
2987,345
Factor Arrows
3329,115
Factor Arrows
3109,705
Factor Arrows
521,941
Factor Arrows
37593

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, 5, 37, 593

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 37 x 593 = 3,949,380

This can also be written as 22 x 32 x 51 x 371 x 5931 = 3,949,380

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


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