Q: What are the prime factors of the number 3,149,312?

 A: 2, 6151

Why are those the prime factors of the number 3,149,312?

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 3,149,312

3,149,312
Factor Arrows
21,574,656
Factor Arrows
2787,328
Factor Arrows
2393,664
Factor Arrows
2196,832
Factor Arrows
298,416
Factor Arrows
249,208
Factor Arrows
224,604
Factor Arrows
212,302
Factor Arrows
26,151

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, 6151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 6,151 = 3,149,312

This can also be written as 29 x 6,1511 = 3,149,312

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


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