Q: What are the prime factors of the number 97,540,320?

 A: 2, 3, 5, 203209

Why are those the prime factors of the number 97,540,320?

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 97,540,320

97,540,320
Factor Arrows
248,770,160
Factor Arrows
224,385,080
Factor Arrows
212,192,540
Factor Arrows
26,096,270
Factor Arrows
23,048,135
Factor Arrows
31,016,045
Factor Arrows
5203,209

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, 203209

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 203,209 = 97,540,320

This can also be written as 25 x 31 x 51 x 203,2091 = 97,540,320

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


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