Q: What are the prime factors of the number 130,122,126?

 A: 2, 3, 71, 419

Why are those the prime factors of the number 130,122,126?

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 130,122,126

130,122,126
Factor Arrows
265,061,063
Factor Arrows
321,687,021
Factor Arrows
37,229,007
Factor Arrows
32,409,669
Factor Arrows
3803,223
Factor Arrows
3267,741
Factor Arrows
389,247
Factor Arrows
329,749
Factor Arrows
71419

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, 71, 419

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 3 x 71 x 419 = 130,122,126

This can also be written as 21 x 37 x 711 x 4191 = 130,122,126

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


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