Q: What are the prime factors of the number 197,118,522?

 A: 2, 3, 31, 39251

Why are those the prime factors of the number 197,118,522?

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 197,118,522

197,118,522
Factor Arrows
298,559,261
Factor Arrows
332,853,087
Factor Arrows
310,951,029
Factor Arrows
33,650,343
Factor Arrows
31,216,781
Factor Arrows
3139,251

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, 31, 39251

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 31 x 39,251 = 197,118,522

This can also be written as 21 x 34 x 311 x 39,2511 = 197,118,522

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


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