Q: What are the prime factors of the number 1,315,350?

 A: 2, 3, 5, 37, 79

Why are those the prime factors of the number 1,315,350?

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 1,315,350

1,315,350
Factor Arrows
2657,675
Factor Arrows
3219,225
Factor Arrows
373,075
Factor Arrows
514,615
Factor Arrows
52,923
Factor Arrows
3779

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, 79

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 5 x 37 x 79 = 1,315,350

This can also be written as 21 x 32 x 52 x 371 x 791 = 1,315,350

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


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