Q: What are the prime factors of the number 1,836,315?

 A: 3, 5, 13, 43, 73

Why are those the prime factors of the number 1,836,315?

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 1,836,315

1,836,315
Factor Arrows
3612,105
Factor Arrows
3204,035
Factor Arrows
540,807
Factor Arrows
133,139
Factor Arrows
4373

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, 13, 43, 73

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 13 x 43 x 73 = 1,836,315

This can also be written as 32 x 51 x 131 x 431 x 731 = 1,836,315

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


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