Q: What are the prime factors of the number 3,816,315?

 A: 3, 5, 349

Why are those the prime factors of the number 3,816,315?

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 3,816,315

3,816,315
Factor Arrows
31,272,105
Factor Arrows
3424,035
Factor Arrows
3141,345
Factor Arrows
347,115
Factor Arrows
315,705
Factor Arrows
35,235
Factor Arrows
31,745
Factor Arrows
5349

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, 349

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 3 x 3 x 5 x 349 = 3,816,315

This can also be written as 37 x 51 x 3491 = 3,816,315

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


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