Q: What are the prime factors of the number 340,440?

 A: 2, 3, 5, 2837

Why are those the prime factors of the number 340,440?

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 340,440

340,440
Factor Arrows
2170,220
Factor Arrows
285,110
Factor Arrows
242,555
Factor Arrows
314,185
Factor Arrows
52,837

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, 2837

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 2,837 = 340,440

This can also be written as 23 x 31 x 51 x 2,8371 = 340,440

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


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