Q: What are the prime factors of the number 307,620?

 A: 2, 3, 5, 1709

Why are those the prime factors of the number 307,620?

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 307,620

307,620
Factor Arrows
2153,810
Factor Arrows
276,905
Factor Arrows
325,635
Factor Arrows
38,545
Factor Arrows
51,709

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, 1709

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 1,709 = 307,620

This can also be written as 22 x 32 x 51 x 1,7091 = 307,620

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


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