Q: What are the prime factors of the number 307,040?

 A: 2, 5, 19, 101

Why are those the prime factors of the number 307,040?

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 307,040

307,040
Factor Arrows
2153,520
Factor Arrows
276,760
Factor Arrows
238,380
Factor Arrows
219,190
Factor Arrows
29,595
Factor Arrows
51,919
Factor Arrows
19101

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, 19, 101

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 19 x 101 = 307,040

This can also be written as 25 x 51 x 191 x 1011 = 307,040

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


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