Q: What are the prime factors of the number 120,216,015?

 A: 3, 5, 281, 3169

Why are those the prime factors of the number 120,216,015?

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 120,216,015

120,216,015
Factor Arrows
340,072,005
Factor Arrows
313,357,335
Factor Arrows
34,452,445
Factor Arrows
5890,489
Factor Arrows
2813,169

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:

3, 5, 281, 3169

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 281 x 3,169 = 120,216,015

This can also be written as 33 x 51 x 2811 x 3,1691 = 120,216,015

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


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