Q: What are the prime factors of the number 307,880?

 A: 2, 5, 43, 179

Why are those the prime factors of the number 307,880?

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 307,880

307,880
Factor Arrows
2153,940
Factor Arrows
276,970
Factor Arrows
238,485
Factor Arrows
57,697
Factor Arrows
43179

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, 5, 43, 179

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 43 x 179 = 307,880

This can also be written as 23 x 51 x 431 x 1791 = 307,880

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


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