Q: What are the prime factors of the number 972,040?

 A: 2, 5, 19, 1279

Why are those the prime factors of the number 972,040?

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 972,040

972,040
Factor Arrows
2486,020
Factor Arrows
2243,010
Factor Arrows
2121,505
Factor Arrows
524,301
Factor Arrows
191,279

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, 1279

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 19 x 1,279 = 972,040

This can also be written as 23 x 51 x 191 x 1,2791 = 972,040

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


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