Q: What are the prime factors of the number 2,357,120?

 A: 2, 5, 29, 127

Why are those the prime factors of the number 2,357,120?

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 2,357,120

2,357,120
Factor Arrows
21,178,560
Factor Arrows
2589,280
Factor Arrows
2294,640
Factor Arrows
2147,320
Factor Arrows
273,660
Factor Arrows
236,830
Factor Arrows
218,415
Factor Arrows
53,683
Factor Arrows
29127

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, 5, 29, 127

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 29 x 127 = 2,357,120

This can also be written as 27 x 51 x 291 x 1271 = 2,357,120

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


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