Q: What are the prime factors of the number 972,360?

 A: 2, 3, 5, 37, 73

Why are those the prime factors of the number 972,360?

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 972,360

972,360
Factor Arrows
2486,180
Factor Arrows
2243,090
Factor Arrows
2121,545
Factor Arrows
340,515
Factor Arrows
313,505
Factor Arrows
52,701
Factor Arrows
3773

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, 37, 73

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 37 x 73 = 972,360

This can also be written as 23 x 32 x 51 x 371 x 731 = 972,360

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


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