Q: What are the prime factors of the number 3,397,212?

 A: 2, 3, 7, 13, 17, 61

Why are those the prime factors of the number 3,397,212?

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 3,397,212

3,397,212
Factor Arrows
21,698,606
Factor Arrows
2849,303
Factor Arrows
3283,101
Factor Arrows
394,367
Factor Arrows
713,481
Factor Arrows
131,037
Factor Arrows
1761

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, 13, 17, 61

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 7 x 13 x 17 x 61 = 3,397,212

This can also be written as 22 x 32 x 71 x 131 x 171 x 611 = 3,397,212

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


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